( CNN ) -- As a reward for information rose to $ 85,000 Wednesday , the president of the police union in Seattle , Washington , said no one in the city is safe while the killer of an officer is on the loose . `` The citizens are outraged , '' Police Guild President Richard O'Neill said in an interview with CNN affiliate KIRO . `` This does not happen in Seattle . '' Law enforcement officials are vowing to catch whoever is responsible for fatally shooting Officer Timothy Brenton and injuring a student officer as they sat in a parked patrol car . Brenton , 39 , a field training officer , was reviewing details of a traffic stop with student officer Brit Sweeney Saturday night when a vehicle rolled up next to the squad car shortly after 10 p.m. , authorities said . People inside the vehicle fired several shots into the squad car , killing Brenton and wounding Sweeney , according to police . According to transcripts released Tuesday , Sweeney called in reporting `` shots fired . '' She sobbed , then a few seconds later said , `` My partner is dead . '' A shot grazed Sweeney , tearing through her uniform and protective vest , Police Chief John Diaz said at a news conference Sunday . She fired at the attackers ' vehicle , but police did n't know whether any of her bullets struck it , Assistant Chief Jim Pugel said . Pugel called the attack an `` assassination , '' but said there had not been a threat made against Brenton . The attackers ' car was a white , light blue or silver subcompact or compact vehicle , Pugel said . Department spokesman Mark Jamieson said police are reviewing dashboard camera video from patrol cars that were nearby . `` We do n't have a suspect 's car [ identified ] . We have a general description of a car that was in the vicinity when this crime occurred , '' Jamieson said . The shooting was the first intentional homicide of a city police officer since 1994 , Seattle Mayor Greg Nickels said . Nickels described the shooting as `` cold-blooded . '' `` We will not rest until the assailant is brought to justice , '' Nickels said at Sunday 's news conference . Crime Stoppers boosted its reward to $ 85,000 for tips leading to an arrest and conviction in the case , Deputy Chief Nick Metz said . Assistant Chief Pugel read a handwritten letter from Brenton 's Family to CNN affiliate KING : `` We know that Tim would be honored and humbled by the limitless support that has been provided at this difficult time . We sincerely thank you for the generous emotional support , thoughts , and prayers . '' Brenton was married with two children , 11 and 8 , Metz said . `` The family is obviously extremely devastated , '' Metz said . `` The family , obviously at the beginning , when he left for work , certainly did n't anticipate that we were going to come knocking on their door . '' Metz told KING , `` For a lot of our officers , this is the first time they 've had to deal with one of their own being killed in the line of duty like this . '' Brenton served on the force for nine years , police said . His father and uncle are retired Seattle police officers .
NEW : Police are reviewing dashboard video from patrol cars that were in the area . Reward for information leading to arrest of Seattle officer 's killer reaches $ 85,000 . Officer Brenton was killed , student officer wounded in shooting ages 11 . Timothy Brenton , a field training officer , was married with children 8 and ages 11 .