[Updated at 1:06 p.m] Authorities in Maryland arrested a man Wednesday on suspicion of plotting to blow up a military recruiting station, a law enforcement source said.

The man - described as a convert to Islam - is upset that the military continues to kill Muslims, the source said. He is to appear in court in Baltimore at 12:30 p.m. Wednesday.

Marcia Murphy with the U.S. attorney's office in Baltimore said the suspect was arrested in the morning hours "in connection with a scheme to attack an armed forces recruiting station in Catonsville, Maryland, with what he believed to be a vehicle bomb."