A 23-year-old man was arrested Wednesday after he opened fire outside the Tulsa County Courthouse, police said. Three people were injured.

Police said the man, identified as Andrew Joseph Dennehy, walked into the plaza outside the courthouse and Tulsa City-County Library and began firing into the air. A deputy fired back, police said.

Tulsa County sheriff's Sgt. Shannon Clark said the incident occurred at 2:39 p.m. (3:39 p.m. ET), the Tulsa World newspaper reported.