Aasta , Norway ( CNN ) -- Three rapid blasts echoed across the Norwegian countryside on Tuesday as police detonated explosives found at a farm owned by the suspect in last week 's bloodbath in Oslo and the island of Utoya . Anders Behring Breivik is accused of killing 76 people in the Friday attacks , most of them at a summer camp run by Norway 's ruling Labour Party on Utoya . Police carried out a controlled explosion at his farm in Aasta , about 100 kilometers ( 63 miles ) north of Oslo , once some of the material was taken away as evidence , police spokeswoman Laila Sondrol told CNN . The detonation was carried out alongside a riverbank on the property , leaving a plume of grey smoke hanging over the farm after the explosion . Sondrol said investigators are continuing to search for other explosives at the farm . Another police spokeswoman , Trine Dyngeland , would confirm neither the type or quantity of the material detonated Tuesday , nor when it was found . Earlier , Breivik 's lawyer told reporters his client was `` a little bit surprised '' that he was able to pull off the bombing and shooting rampage , for which authorities say he has claimed responsibility . The attorney , Geir Lippestad , said Breivik was surprised that his plan `` succeeded -- succeeded in his mind . '' Lippestad said Breivik did n't expect to reach Utoya , where he is accused of shooting 68 people dead . Another eight died in a bombing outside government offices in Oslo earlier that day . Breivik used drugs before the attacks that were designed to keep him strong and awake , Lippestad said . While he said it was too early to say whether Breivik will plead insanity , Lippestad added , `` This whole case indicates that he 's insane . '' Lippestad said it was `` very difficult '' to describe Breivik 's manner -- `` he is not like anyone . '' Norwegian police released the first few names of victims of the attacks Tuesday afternoon . Three of the four -- Tove Ashill Knutsen , 56 ; Hanna Orvik Endresen , 61 ; and Kai Hauge , 32 -- were killed in the Oslo bombing , while 23-year-old Gunnar Linaker died on Utoya . Police said they would post an update at 6 p.m. every day until all the victims have been identified . Their families will be notified first . During a closed court hearing Monday , the 32-year-old suspect said the attacks were necessary to prevent the `` colonization '' of Norway by Muslims , the presiding judge , Kim Heger , said . Breivik accused the Labour Party of `` treason '' for promoting multiculturalism , Heger said . Lippestad said Breivik had told him he was in touch with two terror cells in Norway and in contact with other cells abroad , but that he acted alone in carrying out the attack on Utoya and the Oslo bombing . `` He says there are several cells around the Western world -- where , I do not know , '' Lippestad said . Breivik is cooperating with police inquiries , `` but he wo n't talk about the other cells , '' he said . His client considers himself to be `` in a war , '' Lippestad said . The police declined to say how many people are still missing , saying the number was still subject to change . They have said in the past that they were searching for four or five people . Forensic scientists are still searching Utoya for clues , and the island will remain closed to the public for at least two weeks , Norwegian Police Chief Sveinung Sponheim said . Other countries are involved in the Norwegian investigation into last week 's attacks , police said in response to a question about Breivik 's claim to have been in contact with terror cells abroad . They declined to name the other countries , saying , `` The investigation is in Norway . '' They also declined to say where Breivik is being held . Prosecutors are considering charging Breivik with crimes against humanity , according to police . He is facing terror-related charges that carry a maximum 21-year sentence . Geert Wilders , a Dutch politician whose Freedom Party is referenced in a manifesto apparently written by Breivik , condemned the suspect 's alleged actions Tuesday . Wilders said he was not `` responsible for a lone idiot who twisted the freedom-loving anti-Islamization ideals '' of his party . Meanwhile , U.S. President Barack Obama and Vice President Joe Biden visited the Norwegian ambassador 's residence in Washington Tuesday to `` offer condolences to the people of Norway after the tragic killings that occurred last week , '' according to a White House statement . Earlier , Breivik 's father said his son should have killed himself instead of allegedly going on the killing spree . `` In my darkest moments , I think that rather than killing all those people , he should have taken his own life , '' Jens Breivik said in an interview with Norway 's TV2 . He said he also believes his son has mental issues . `` He must be . He must be , '' the father said in response to a reporter 's question about whether he thought his son was mentally ill. `` There is no other way to explain it . A normal person would never do such a thing . '' Jens Breivik had a message for all the victims during his interview . `` I would like to say that I feel an incredible grief and despair over what has happened . I often think of how terrible it must be for those who are affected by this . I wish I could do something for them , but here I am , powerless to do anything , '' he said . Lippestad said Breivik does not know what his father said . He said he does not know if any of Breivik 's family members have asked to see him . Jens Breivik , who was interviewed at his home in France , said he would not be visiting his son as the legal process continues . `` No . I will never have more contact with him , '' he told TV2 . The suspect 's father was one of many people searching for answers Tuesday after the mass killings that terrorized Norway last week . At a news conference Tuesday , hotelier Petter Stordalen pledged to give 5 million kroner ( $ 923,000 ) to rebuild Utoya Island . He promised it would be `` a new Utoya , a Utoya for everyone . It 's been a summer camp for the Labour Party , now it 's to be an island for everyone . '' Eskil Peterson , a leader of the Labour Party 's youth movement , the AUF , said the party had first been shocked and now was mourning those killed . That sorrow will intensify when police release the identities of all those killed , he said . `` When we see those names , it will be heartbreaking for everybody , '' he said . According to Heger , Breivik said he worked with two cells to launch the attacks , the deadliest onslaught in Norway since World War II . Police refused to comment on the claim , but a police official said Breivik appeared to be `` very calm '' during his hearing . Almost 200,000 people participated in a memorial Monday in downtown Oslo to honor the victims , authorities said . Breivik hates democracy and all who believe in it , his lawyer said Tuesday . He added that his client felt the rest of the world did n't understand his point of view but that they would in 60 years ' time . He is undergoing a medical examination , Lippestad told reporters . Breivik is now `` very tired '' because of his circumstances , he said , but he was not injured when he was taken into police custody . Marit Andersen said she knew Breivik in high school and described him as an entertainer who had friends and was quite successful in school . Andersen said she later saw Breivik 's views change . `` Later , it became more extreme , and I remember after we all got on Facebook , I became friends with him there , '' Andersen said . `` He had some rather outrageous statements there . I had commented on something he said . ... I said you ca n't say stuff like that . It 's unacceptable . '' Breivik appears to have written a 1,500-page manifesto that rants against Muslims and lays out meticulous plans to prepare for the attacks . In it , the author vilifies Stoltenberg and the Labour Party , accusing it of perpetuating `` cultural Marxist/multiculturalist ideals '' and indoctrinating youths with those ideals . The author accuses the Labour Party of embracing those ideals and allowing the `` Islamification of Europe . '' CNN has not independently confirmed that Breivik is the author of the manifesto , which bears his name and says it is intended to be circulated among sympathizers . The writer rails against Muslims and their growing presence in Europe , and calls for a European civil war to overthrow governments , end multiculturalism and execute `` cultural Marxists . '' It contains photographs of Breivik wearing what appears to be a military uniform that features an altered U.S. Marine Corps dress jacket with medals of the Knights Templar -- an order of Christian Crusaders who helped fight against Muslim rule of the Holy Land in the Middle Ages , but which was shut down 700 years ago . Breivik asked to wear a uniform to the court hearing but was not allowed to , Heger said . The judge said he ordered Breivik held in isolation for the next four weeks to ensure he has no opportunity to tamper with evidence , Heger said . The suspect has access to his lawyer but to no one else , and not to letters or news , court officials said . According to the Norwegian newspaper VG , which cited unidentified sources , Breivik told investigators during interviews that he belonged to a revived Knights Templar . He described the organization as an armed Christian order , fighting to rid the West of Islamic suppression , the newspaper said . CNN 's Jonathan Wald , Nic Robertson , Antonia Mortensen , Laura Perez Maestro , Michael Holmes , Jennifer Deaton , Erin McLaughlin and Greg Botelho contributed to this report .
NEW : Police detonate explosives at the massacre suspect 's farm . `` This whole case indicates that he 's insane , '' the suspect 's lawyer says . Obama offers condolences to Norway 's ambassador in Washington . Comment: