Police said two people were injured and the gunman was injured after being shot dead near Grapevine Mills late Monday.
Initial reports indicated that the incident occurred in a 7-Eleven parking lot along Grapevine Mills Boulevard, Grapevine Police said.
Police said the suspected shooter may be armed and have asked people to escape the area.
Police said the status of the victims was not immediately known.
This is a developing story and will be updated.