LADUE, Mo. (AP) — A suburban St. Louis man is jailed on charges that he severely injured a man by stomping on his head at a party.

The St. Louis Post-Dispatch says Darrian Johnson of St. Charles is charged with first-degree assault in the alleged attack on Brandon Pudlowski before dawn on May 3 in Ladue.

Police allege that Johnson was mocking a young woman at the party, and Pudlowski was attacked when he came to her defense.

The newspaper reports that Pudlowski later underwent surgery for brain bleeding and brain swelling at Mercy Hospital St. Louis in Creve Coeur.

A message seeking comment was left Thursday with Johnson’s public defender, Colleen Polak.

Johnson remained jailed Thursday in lieu of $100,000 cash-only bond.

His preliminary hearing is scheduled for June 23.