( CNN ) -- Four suspects are sought in connection with the shooting death over the weekend of a Houston , Texas , doctor , Austin County authorities said Monday . Dr. Jorge Mario Gonzales was found shot to death at his ranch in rural Texas on Saturday , police say . Dr. Jorge Mario Gonzalez , 56 , was chief of the critical care section at Houston 's Methodist Hospital and `` a pulmonary medicine leader , '' according to the hospital system 's Web site . He was found dead Saturday when deputies responded to a 911 call of a burglary in progress shortly after noon , said Austin County Sheriff 's Office spokesman Sgt . Paul Faircloth . The responding officer was met by vehicles leaving the location , Faircloth said , and a person in one vehicle fired on the officer . The officer and his car were not struck , and the officer did not return fire , Faircloth said . The officer was able to provide a detailed description of the vehicles , he said . At the home , which Faircloth said is in a rural , wooded and isolated area , officers found Gonzalez shot to death and another person wounded . The second victim was airlifted to an Austin , Texas , hospital . Watch Dr. Gonzalez 's son talk about his father » . Gonzalez 's wife and small child were found unharmed inside the home , Faircloth said . CNN affiliate KHOU identified the woman as Charleen Gonzalez , 29 , and the couple 's 2-year-old son , and reported the two hid in a closet . Authorities do not know whether the incident was a burglary or an intended home invasion , Faircloth said , and `` we do not know if this is random or targeted . '' Several leads were being followed Monday morning , he said , and numerous agencies were involved in the investigation . The motive for the killing had not been determined on Monday . The slaying took place at Gonzalez 's ranch outside Bellville , Texas , said Lisa Block , spokeswoman for the Texas Department of Public Safety . Gonzalez , his wife and child arrived at the ranch about 11 a.m. Saturday , she said , and `` the suspects were at the house when they arrived . '' Gonzalez 's wife ran inside with the child and called 911 , she said . Ranch worker Noel Galvan was the second victim , Block said . He was listed in critical condition , she said . Faircloth said earlier Monday five suspects were being sought , but later said police were seeking four . The vehicles seen leaving the home were a late '90s white Ford F-150 pickup , occupied by two Hispanic males , Faircloth said , and a red Honda or Acura with dark tinted windows sitting low to the ground , with one Hispanic male inside . The shots were fired from the white pickup , he said . Another vehicle mentioned earlier Monday was a two-toned silver and black Ford F-150 that had two Hispanic males inside . Faircloth said Monday afternoon that vehicle had been located and was not thought to be involved . However , police released a video of a gray Lexus on Monday , and would like to question its owners , Faircloth said . The drivers are believed to be an older couple . The car was seen before the officer encountered the white and red vehicles . `` The manhunt continues on the ground , '' Faircloth said . The suspects are considered armed and dangerous , he said . Faircloth said he had no information on whether the home had surveillance equipment . Family members told KHOU that Gonzalez went to the ranch nearly every weekend . `` It 's deeply saddening for all of us , '' an older son of Gonzalez , Juan Mauricio Gonzalez , told KHOU . `` We are a tight-knit family and he was just a perfect man , a perfect father and a great physician . '' The Methodist Hospital System said Gonzalez will be missed , `` both as a friend and an outstanding clinician and researcher . Our prayers and thoughts go out to his family during this tragedy . '' `` This man had nothing to do with anybody , '' Juan Gonzalez told KHOU . `` He was a peaceful man . He was a wise man . He was just here to make people better and nothing else . '' A reward totaling $ 26,000 was offered for information in the case leading to an arrest . CNN 's Melanie Whitley contributed to this report .
Suspects were at doctor 's house when he , wife and child arrived , police say . Police responded to five call of burglary at rural home of Texas , Houston , doctor . Police found Dr. Gonzalez shot to death and a ranch worker badly injured . Jorge Mario Gonzalez 's wife and toddler found unharmed ; they reportedly hid in a closet .