St Louis County Police Chief Jon Belmar said Friday they were no closer to making an arrest in Wednesday 's shooting of two officers . He stepped back from earlier assertion that the shooting was an 'ambush ' and that the gunman was 'embedded ' among protesters . No one is in custody at this time and an arrest is not imminent , Belmar said . The St. Louis Metropolitan police chief says he has a suspect who shot and killed two law enforcement officials on Wednesday, but declined to say whether it was linked to protests over recent fatal shootings by police.
St Louis County Police Chief Jon Belmar said Friday they were no closer to making an arrest in Wednesday 's shooting of two officers . He stepped back from earlier assertion that the shooting was an 'ambush ' and that the gunman was 'embedded ' among protesters . No one is in custody at this time and an arrest is not imminent , Belmar said . Two dozen tips have come in over the past 48 hours and detectives were 'working around the clock , ' the chief said .