Crime watch advisor Sgt. Lawrence Fenneley said extra posters and flyers have been distributed urging students to keep their doors locked.
Meanwhile, several shooting and near-shooting incidents have occurred in Cambridge over the past five days.
Most recently, a man was shot in the back with a shotgun late Tuesday night at Newtowne Court, a housing project near Kendall Square, the Cambridge police log stated.
The victim, Bryan Gibson, was in intensive care at Beth Israel Hospital, a hospital spokesperson said yesterday.
In addition, four men were arrested near MIT early Saturday after a fight in which a gunshot was fired, an MIT spokesperson said.
The fight erupted after several men were refused entry to an MIT dance, university spokesperson Kenneth D. Campbell said. No students were involved, he said.