The woman accused of shoving a 63-year-old woman off an MBTA bus in Boston last week was mad because the victim was blocking the exit, prosecutors said in court on Thursday.

Luz Pineda, 32, pleaded not guilty to one count of assault and battery on an elder or disabled person with injury at her arraignment in Roxbury District Court.

The incident was recorded on video back on September 8 in Roxbury. Prosecutors said the bus was crowded and it was difficult for riders to exit. Pineda allegedly asked the unidentified woman to move from the exit but she refused. Prosecutors said the two got into an argument, Pineda started screaming at the woman and then kicked her shopping cart off the bus. She then allegedly shoved the woman off the bus onto the sidewalk outside.

According to prosecuto

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