Michael Davis, the man charged with the murder of a tourist in Petworth and thought to be linked to a number of other hammer attacks in the neighborhood, was ruled incompetent to stand trial today, reports NBC4.

A Maryland court ruled late last week that pit bulls are “inherently dangerous” and that an owner and even their landlord could be held liable for any attacks for the mere fact that the dogs are pit bulls.

D.C. Police Chief Cathy Lanier announced this morning that 19-year-old Michael Davis was arrested last night in Petworth after attacking a woman with a hammer. Police are investigating whether he’s linked to three other similar attacks in the area.

The Metropolitan Police Department is investigating the possibility that the murder this week of a 66-year-old tourist in Petworth could be linked to other attacks in the neighborhood, NBC4 reports.

No real surprise here — according to a report from a terrorism research institute at the University of Maryland, the District came in fifth on a list of terrorism “hot spots” across the country, having been targeted 79 times from 1970 to 2008.