Two police officers have been shot and critically wounded in an incident at a hardware store in Dallas.

The incident happened about 4:30 p.m. Tuesday outside a Home Depot store on U.S. 75 in northern Dallas.

A message on the Dallas Police Department Twitter feed said the officers were critically wounded, but provided no other details. Aerial video showed police using a helicopter and trained dogs to search for a suspect in a wooded area next to the store parking lot.