a wooded area about a mile from the jail , he said . Three of the inmates were awaiting trial ; one already had been convicted , Bonnett said . The captured inmates were Gary Slaydon , 27 ; Eric Buras , 30 , and Jason Gainey , 27 . Slaydon is charged with attempted murder . Buras is a murder suspect and Gainey has been convicted of murder , Bonnett said . He said the escape was not discovered until a resident and Covington police reported seeing what appeared to be inmates in jail uniforms walking down a street . About the time those calls came in , jailers were doing a routine head count and found the four men missing , Bonnett said . He said the means of escape was under investigation , but it has been determined that their escape was n't due to human error . He repeated what St. Tammany Parish Sheriff Jack Strain said early Friday : `` Four inmates were able to defeat the structure of the maximum security area of our jail . '' Deputies have canvassed neighborhoods , going door to door to warn residents that an inmate is still
-LRB- CNN -RRB- -- More than 100 police officers and others were searching Friday in a southeastern Louisiana parish for a murder suspect who escaped from jail with three other inmates , a law enforcement official said . Timothy Murray , 29 , who is charged with murder , remains at large , authorities in Louisiana say . Searchers are still focusing inside St. Tammany Parish , on the northern shore of Lake Pontchartrain , 30 miles north of New Orleans , said Capt. George Bonnett of the St. Tammany Parish Sheriff 's Office . At large is Timothy Murray , 29 , who is charged with murder , Bonnett said . Authorities believe Murray may have been injured during the escape , but Bonnett would n't elaborate . The inmates escaped about 9 p.m. Thursday from the St. Tammany Parish Jail in Covington , Bonnett said . As many as 250 sheriff 's deputies , Covington police officers , Louisiana State police and corrections officials were involved in the search overnight , using dogs , two helicopters and thermal-imaging equipment loaned from Livingston Parish , Bonnett said . The other three men were found about 1:30 a.m. Friday in