One officer has reportedly been transported to the hospital. There are reports of officers being assaulted.
Federal officers responding in riot-torn cities last year were criticized for not wearing ID or agency names.
Responding officers evacuated the residential buildings in the area after hearing the warning. They were working to get people out when the explosion detonated.
In 1998 Carlos Morales-Ramirez, now 44, was convicted of second-degree murder, assault on a child causing death, and great bodily injury to a child causing death
Surveillance video footage from the Third Precinct showed Williams, wearing a mask, a baseball cap and a hooded sweatshirt, standing near the entrance of the Third Precinct holding a Molotov cocktail while other co-conspirators lit the wick.
Despite evasive efforts, the drone struck the helicopter, forcing the pilot to initiate an emergency landing. The drone damaged the helicopter's nose, antenna and bottom cowlings, according to court papers.
A Montgomery County, MD, officer was shot by a suspect after attempting to arrest the suspect for a homicide on Tuesday, police say. The officer was airlifted from the scene by a U.S. Park Police helicopter and condition is unknown.
Philadelphia police and federal agents said they found a van containing low-grade explosives as the city tries to stem the widespread unrest, rioting, and looting that followed the fatal police shooting of 27-year-old Walter Wallace Jr.
Officer Rod Flowers is accused of protecting shipments of cocaine as they were transported throughout the region.
The FBI started monitoring the group in March when an informer stepped forward to warn of danger against law enforcement. The informant told the feds that the group was trying to obtain home addresses of law enforcement officers.