police chief County Police Chief Jon Belmar said Friday they were no closer to making an arrest in Wednesday 's shooting of police officers . He came back from earlier assertion that the shooting was an ' ambush ' and that the shooting 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 perimeter , ' the chief said .
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 .