A man was charged Monday with assaulting the mother of one of his female friends late last month,

Kurt Nagel, 25, is accused of assaulting the woman in her Nassau Avenue home in Kenmore on Dec. 30, Kenmore police said.

Nagel, no address released, is being held in the Erie County Holding Center in lieu of $100,000 bail.

The victim, whose age was not released, required surgery because of severe head injuries she suffered in the attack, police said.

The case remains under investigation.