Edward Nero, one of the six officers charged in the arrest and death of Freddie Gray, alerted supervisors in January while working with the Foxtrot helicopter unit that he had observed Baltimore County police officers kicking and punching a suspect, according to a police report.
One of the officers is now facing criminal assault charges.
Nero was the first officer charged in the Gray case to be acquitted, following a bench trial in May 2016. He had faced misdemeanor charges of second-degree assault, reckless endangerment and two counts of misconduct in office for his role in Gray's initial arrest.
Administrative proceedings for the officers, who were all acquitted or...