A Baltimore County, Maryland police officer was fatally shot Monday by a suspect who still remains at large.

“We are deeply saddened to learn of the passing of a Baltimore County Police Officer after she was shot in the line of duty today,” Maryland Gov. Larry Hogan tweeted. “Our prayers go out to this brave officer’s family, @BACOPoliceFire, and the Baltimore County community.”

There are reports that the officer was shot in the head but that could not be immediately confirmed. WBAL reported the officer has been “critically wounded,” while the county’s public safety branch tweeted the officer was transported to a local hospital.

This is a developing story.