HOPKINTON - We are hearing more about the circumstances surrounding a Hopkinton Police Sgt. being placed on administrative leave. Officials confirmed this week to local media that Tim Brennan was placed on paid leave but were not able to say why, citing policy on personnel matters. Hop News reports that Brennan provided testimony against former Deputy Cheif John Porter who stands accused of raping a student back when he was a School Resource Officer, with a source reportedly telling Hop News Brennan had been aware of the allegations.