Three people were killed and two others were injured after a gunman opened fire at an office park in Maryland, the sheriff's office said Wednesday.

Harford County Sheriff Jeffrey Gahler identified the shooter as 37-year-old Radee Labeeb Prince. He said Prince opened fire with a handgun and police are looking for him. He is considered armed and dangerous.

The suspect and the victims were all associated with a company at the Emmorton Business Park in Edgewood. The sheriff said the two wounded people are in serious condition.

Nearby schools have been locked down as a precaution.

The business park is just south of the Interstate 95 interchange with Route 24.