( CNN ) No charges have been filed against a man who shot the police chief of a small town in Oklahoma four times , the Oklahoma State Bureau of Investigation says . Sentinel Police Chief Louis Ross was shot Thursday morning after he entered a house looking for the person who allegedly phoned in a bomb threat to a Head Start center , CNN affiliate KFOR reported . Ross was shot by the man living in the house , KFOR said . The chief had just donned a protective vest , which is credited with saving his life , the OSBI said in a press release . His condition was not available Saturday night . `` The man who shot and wounded the Sentinel police chief will not be arrested at this time , '' the release said . `` OSBI investigators have extensively interviewed the man . Facts surrounding the case lead agents to believe the man was unaware it was officers who made entry . '' `` We almost lost a good man , '' Sentinel Mayor Sam Dlugonski told KFOR . Sentinel , population 900 , is about 100 miles from Oklahoma City . The OSBI said somebody called 911 about 4 a.m. Thursday to report a bomb had been placed in the Head Start center . While a bomb squad searched the building and did n't find any explosives , the chief and deputies went to the home where they thought the bomb threat originated , the OSBI said . `` They made entry , cleared the first bedroom , started to clear the second bedroom , he opened fire on police and shot our chief three times in the chest and once in the arm , '' Dlugonski told KFOR . The resident , who was not hurt , surrendered to police after the shooting . In a press release issued Friday , the OSBI said it had determined the bomb threat call did not originate from the man 's house . Dlugonski said the caller used the resident 's name , KFOR reported . KFOR reported that officers entered the house without a search warrant . One Sentinel resident said he understood why the shooting happened . `` This is country , this ai n't Oklahoma City , '' Jimmy Rhoades told KFOR . `` You 're taught from a young age that if somebody comes into your house to shoot . '' Ross was wearing a protective vest loaned to him by a Washita County deputy , the OSBI said . `` The vest saved Ross 's life , '' the OSBI said . CNN 's Janet DiGiacomo contributed to this report .
Police chief of Oklahoma , Sentinel , shot 911 times , survives . OSBI has not filed charges . Oklahoma State Bureau of Investigation says chief 's life saved by a borrowed protective vest .