Maryland ? Security screeners discovered a pistol in a carry-on bag at Baltimore’s main airport Friday morning, and two concourses were evacuated when its owner disappeared, authorities said.

The bag was held at the security checkpoint at Baltimore/Washington International Thurgood Marshall Airport, but the man who owned it passed through, airport spokesman Jonathan Dean said.

There was no indication of terrorism, police said.

Police, security officers and dogs unsuccessfully hunted for a man in his early 30s, wearing blue jeans and a red and black track jacket, Transportation Security Administration police spokesman Jonathan Green said.