Edwin Alvarado, 22, was arrested last night on charges of assault and battery and intimidation of a witness, the Middlesex County District Attorney's office reports:

It is alleged that Alvarado, who was known to the witness, learned that John Doe had provided information to authorities. Alvarado then called the witness and asked him to meet outside a home on Rindge Avenue. When John Doe met him at approximately 4 p.m. yesterday, Alvarado slapped him twice in the face and threatened that he should not continue to provide information regarding the investigation.

The witness had reportedly provided information to police about the death of Jason Ellcock, gunned down early Tuesday morning by the Fresh Pond Apartments.

Innocent, etc.