Updated

A man accused of shooting and injuring two co-workers at a McDonald's restaurant in suburban Cincinnati has pleaded not guilty to attempted murder charges.

Twenty-year-old Zachary Allart pleaded not guilty Friday in Hamilton County Municipal Court. Bond was set at $4 million.

The Hamilton County Sheriff's Office says Allart shot Denise Higgins and Jayla Frost late Wednesday night at a McDonald's in Anderson Township.

Higgins is the restaurant's manager. The sheriff's office says Frost is Allart's ex-girlfriend. Both were hospitalized in critical condition.

The sheriff's office says Allart put a gun to his head and threatened to kill himself before deputies persuaded him to put the gun down.

Court records don't list an attorney for the Cincinnati man.

Anderson Township is about 15 miles (24 kilometers) east of downtown Cincinnati.