ATLANTA, GA (AP) — An Atlanta man was arrested and charged with aggravated battery on Wednesday afternoon after police say he bashed a man across the head while he slept.

Atlanta Police Chief Richard Pennington says Kelly Andrew Johnson, 27, was taken into custody on Wednesday afternoon following a brief standoff at his downtown condominium.  No one was injured.

A witness told officials that he saw Johnson bash Martín Manuel Prado of Maracay, Venezuela, across the head with a steel pipe as he slept in his Duluth home. Investigators took time in gathering the evidence before obtaining warrants for Johnson's arrest. Atlanta Police refused to discuss any motives.

Prado, 25, has been experiencing strange neurological symptoms since the attack and is now undergoing a thorough battery of tests to determine what damage may have been caused in Johnson's alleged attack.

At press time, no bond had been set. Johnson is set to be arraigned on Thursday morning in an Atlanta court.