A Texas High School was put on lockdown Friday as police search for a gunman suspected of shooting at least one person and carjacking several others.

Northwest High School in Justin was secured in response to a robbery suspect on the loose. He is described as a white male dressed in black and carrying a 12-gauge shotgun. He may have night binoculars, and police consider him armed and dangerous, the Fort Worth Star-Telegram reported.

Click here for the Fort Worth Star-Telegram story.

A father and son pair was reportedly bound and had their cell phones and wallets stolen by the suspect during a robbery of a business in Fort Worth. A third man was shot in the leg when he arrived at the scene, the Telegram reported. One of the two restrained victims later freed himself and called 911.

Police believe the suspect, who has changed vehicles serveral times, is currently driving a maroon Toyota Tundra pickup.