An Alabama man has been arrested and charged with detonating an explosive device outside the Alabama Attorney General’s office.

Alabama Attorney General Steve Marshall issued a statement Wednesday following the federal indictment and arrest of Kyle Benjamin Douglas Calvert, 26, of Irondale, Alabama.

Calvert is being charged with two felony counts of malicious damage by explosive and possession of an unregistered destructive device.

The charges are related to an explosion that occurred in February at the Attorney General’s Office. No staff or bystanders were injured by the explosion.

“My staff and I are breathing a collective sigh of relief this morning knowing that this individual has been taken off the streets,” said Attorney General Marshall. “Although more information will be provided in the weeks to come, I think it is safe to say that this was not a random act of violence. We are grateful to our federal and local partners for their assistance in this matter and are pleased that the offender faces federal charges carrying significant prison time.”

If convicted, Calvert faces a maximum penalty of 20 years of imprisonment and a fine for malicious damage by explosive, and 10 years of imprisonment and up to a $10,000 fine for the possession of an unregistered destructive device.