According to a posting on the Franklin School Listserve, a landscaper was shot by a BB while working in a yard on Sheridan Street. The post says:

On Saturday Afternoon 4/7/2012 we had landscapers […] cleaning the front of our house [on Sheridan Street].  At around 3:30 pm one of his workers was shot with a BB gun in the back.  This pellet penetrated so deep that he will require surgery to remove it.  The Newton Police are investigating.

[…]

Based on where the man was standing when he got shot – the shot had to have come from Cleveland/Smith Ave area.

Anyone with information is asked to call Newton Police.