Thai Police in Bangkok Seize Bomb-Making Material BANGKOK - Thai police officials on Monday seized what they said was a large stash of bomb-making materials from a commercial building on the outskirts of Bangkok, the latest development in a case that has put the country on alert for a terrorist attack. Thai police officers carrying boxes of fertilizer and ammonium nitrate they confiscated at a warehouse on the outskirts of Bangkok on Monday. Thai police officers escorted a Lebanese man, center, in Bangkok on Monday. The man has been in custody since Thursday, and police have accused him of plotting violence in the country. The officials were led to the building by a Lebanese man who has been in custody since Thursday and whom the authorities accuse of being part of a group planning violence. Thai officials have obliquely warned of the possibility of attacks since before the New Year's holiday but the warnings became more explicit on Friday when the United States Embassy in Bangkok issued an "emergency message" that said foreign terrorists might be planning to conduct attacks against "tourist areas in Bangkok in the near future." On Monday Thai officials said they believed Thailand was not a target. The chief of the metropolitan police, Winai Thongsong, said in an interview that the suspects had contacted a shipping company in Thailand to send the materials out of the country in containers. "At first, we were not sure whether Thailand was a target or not," Mr. Winai said. But now it is quite clear that our country was being used as a transit area. The building where the materials were found is a three-story "shop-house" in Samut Sakhon Province, near Bangkok. Investigators found urea fertilizer packed in bags labeled cat litter and plastic drums of ammonium nitrate, two materials that can be used to make explosives. The Lebanese suspect, whom Thai officials identified as Atris Hussein, accompanied police officers wearing a protective vest and face mask. He was charged on Monday with possessing arms - the chemicals - without a license and faces up to five years in prison if convicted. Police officials have distributed a sketch of what they said was a second suspect who is still at large. Authorities say Mr. Hussein, who was arrested at the airport Thursday evening while trying to leave Thailand, had rented the building in Samut Sakhon for the past year. Thai officials say Mr. Hussein is a member of Hezbollah, a militant Shiite group based in Lebanon, but a spokesman for Hezbollah last week denied this. The Thai authorities have sent mixed messages in recent days over the risk of attacks in Thailand. Security over the weekend was increased at Khao San Road, a center for backpackers in the capital, and other places popular with foreigners. Thai officials have said Israeli establishments in Thailand - the country is very popular with young Israeli travelers - could be targets. The Israeli government issued a warning last week to its citizens currently visiting Thailand, advising them not to congregate in public. But on Monday, the Thai prime minister, Yingluck Shinawatra, urged people not to panic. "The situation is under control - no problem," she said. And I can guarantee the safety of our citizens and foreign tourists. Poypiti Amatatham contributed reporting.