By Shannon McDonald

Police have arrested and charged a man in connection with last week’s assault on the Market-Frankford line.

David A. Kaplan, 39, has been charged with sexually assaulting a 22-year-old woman while she held her baby on the El Thursday. Kaplan sat next to the woman and held a knife to her side as he assaulted her from the Frankford Transportation Center to the Eighth Street stop.

Second District officers arrested Kaplan after responding to a call about a person with a knife on the 6900-block of Rising Sun Avenue and matched the offender to a composite sketch.

Kaplan was found guilty of three counts of theft last year, and sentenced to 12 months’ probation.