Halifax Regional Police are investigating a string of violent attacks in Dartmouth last night they believe are related.

At 9:40 p.m. Monday, a driver on Dorothea Drive and Topsail Boulevard had to slow down when four or five people blocked the road. The driver later told police that as he slowed, the group ran at his car and he thought one man reached for his waistband.

That driver backed off and drove away. He told police one man wore a hooded black sweatshirt with lettering on the front. He kept his hood up and covered his face with a green bandana. The other men also had hoodies up.

Here's an interactive map of the night's incidents:

Multiple attacks, break-and-enter

Less than 15 minutes later at 9:53 p.m., an 83-year-old Dartmouth man was attacked by two men who forced their way into his home on Cross Road and Dewhust Drive, police said.

The man didn't know his attackers, who ran away, police said. Nothing seems to have been stolen.

One minute later, two men attacked a 23-year-old man on Dorothea Drive. The men punched him to the ground and kept attacking until the 23-year-old's family chased them off.

Those two attackers were in their mid-20s and wore hoods up. Police don't think anything was stolen.

Just after 10 p.m., two men tried to kick in a house door on Carlson Court, but ran away.

Both Halifax police and Cole Harbour RCMP searched the area, including with a canine unit.

2 youths arrested

Police arrested two teenagers on Poplar Drive near Sirius Crescent in Cole Harbour, near where the incidents took place. A 16-year-old boy and a 15-year-old girl are being interviewed by police.

Investigators want to speak with anyone who knows anything about these incidents and ask that they contact police at 902-490-5020. Anonymous tips can be sent to Crime Stoppers by calling toll-free 1-800-222-TIPS (8477).