UNION, Maine — The Knox County Sheriff’s Office is investigating a home invasion in Union Wednesday evening that may also be connected to five car burglaries in the area that same night.

At about 6:30 p.m., a man allegedly forced his way into a residence on Sennebec Road. He knocked on the door and then forced his way in after a 22-year-old woman opened it, according to Sheriff Donna Dennison. He assaulted the woman, but she did not require medical treatment, the sheriff said.

The man allegedly stole an undetermined amount of money and several unspecified items. The total amount stolen is expected to be worth several thousand dollars, according to Dennison, who said the homeowner was compiling a list.

There was no weapon displayed, she said.

The sheriff said it is unknown at this time how many people were involved, but the man fled the residence. Police weren’t sure if he had a vehicle waiting for him.

Dennison later reported on Thursday that five car burglaries in the area are suspected of being connected to the home invasion. The break-ins occurred Wednesday night to vehicles on Appleton and Town Hill roads in Union and Chaples and Sleepy Hollow roads in Appleton.

Deputies have several leads and the investigation continues, the sheriff said.