A 22-year-old man who may be responsible for shooting at motorists in Garland, Mesquite, Richardson and Plano was in custody this morning, Garland police said.

Thai-An Huu Nguyen, 22, faces charges of aggravated assault, endangering a child and deadly conduct. Bond had not been set as of late Tuesday when he was arrested. 

Police said a gunman who shot at three groups of motorists on Sunday and one person on Monday struck again in Plano on Tuesday on the Bush Turnpike. Witnesses told police shots were fired from a black Honda Prelude with an oversized chrome exhaust.

At about 9 p.m. Tuesday, a Honda pulled into the parking lot of a restauarant in the 4500 block of West Walnut Street in Garland. The driver got out of his car, walked to the restaurant and fired into a wall just below the windows. He then returned to his car and drove away. No one was injured, police said.

About 90 minutes later, a Garland officer saw a Honda Prelude about a half mile from the restaurant and made a traffic stop. Police said a pistol, believed to be used in the shootings, was found inside the car. The driver, who matched the description of the shooter at the restaurant, was taken into custody without incident. 

Police were investigating whether the suspect is responsible for all six suburban shootings that took place over three days this week.  Three people have been injured.

Shortly after 7 p.m. Tuesday, a woman was driving west on the Bush Turnpike between Central Expressway and Custer Road in Plano when a small black car pulled up alongside her, Plano police spokesman Rick McDonald said. Someone in the car fired a shot, but neither the woman nor her car was struck, he said. The shooter's vehicle continued westbound on the turnpike.

On Monday afternoon in Richardson, a driver was shot at while waiting at a stoplight.

"We feel relatively confident that they're linked," Richardson police Sgt. Kevin Perlich said before the Plano shooting. "This guy turns a corner, goes the opposite direction of our victims and starts shooting at them."

About 5 p.m. Monday, Richardson police received reports of shots fired in the 1000 block of North Jupiter Road. The targeted motorist was stopped at a light near Arapaho Road when three bullets hit the driver's side of his 1995 Ford Explorer, flattening a tire.

The motorist, who was not injured, saw a man in a black Honda waving a handgun out a window.

"The fact that our victims are waiting for a signal light and that they haven't been involved in any type of disturbance or dispute prior to the incidents taking place, that seems to be a common factor with all of them," Sgt. Perlich said.

The three shootings Sunday occurred within 10 miles of one another. Garland police say one gunman, possibly armed with a pistol and driving a small, dark vehicle, may have been responsible for all of them.

Handout.

Thai-An Huu Nguyen, 22, faces charges of aggravated assault, endangering a child and deadly conduct.

In the first shooting, shortly before 5 p.m. in Garland, bullets shattered the windows of a four-door Honda with a man, a woman and her 4-month-old daughter inside. They were stopped at a red light at Buckingham and Shiloh roads.

The 22-year-old man was shot in the hand. The woman was cut on her face and arms by breaking glass. The baby was covered with broken glass but not injured.

About 9:20 p.m., Garland police received another call, to Walnut Street just east of Plano Road. A 37-year-old Dallas man was shot in the abdomen while sitting at a red light with his 9-year-old son. The man's injuries were not life-threatening. His son was not injured.

Then, just after 10 p.m., Mesquite police reported a vehicle being shot at as it exited Interstate 635 onto Oates Drive. The victim was not injured.

Police are puzzled as to why someone might be randomly shooting at motorists. Garland police Officer Joe Harn said he couldn't remember another such case in that city – "not that I recall in 28 years."

WFAA-TV's Steve Stoler contributed to this report