A man prays outside of the Medical Center Hospital Emergency room in Odessa, Texas, Saturday, Aug. 31, 2019, following a shooting at random in the area of Odessa and Midland. Several people were dead after a gunman who hijacked a postal service vehicle in West Texas shot more than 20 people, authorities said Saturday. The gunman was killed and a few law enforcement officers were among the injured. (Mark Rogers/Odessa American via AP)

AUSTIN, Texas (AP) — At least five people were dead in West Texas after a man who was stopped by state troopers when his vehicle failed to signal a left turn opened fire and fled, shooting more than 20 people as he drove before he was killed by officers outside a movie theater, authorities said Saturday. Three law enforcement officers were among the injured.

The shooting began with an interstate traffic stop in the heart of Texas oil country where gunfire was exchanged with police, setting off a chaotic afternoon during which the suspect hijacked a mail carrier truck and began firing at random as he drove in the area of Odessa and Midland.

Police initially reported that there could be more than one shooter, but Odessa Police Chief Michael Gerke later said there was only one.

“The suspect continued shooting at innocent civilians all over Odessa,” a statement from Odessa police said.

Gerke described the suspect as a white male in his 30s. He did not name him or a motive but said he has some idea who the gunman is.

The terrifying chain of events began when Texas state troopers tried pulling over a gold car mid-Saturday afternoon on Interstate 20 for failing to signal a left turn, Texas Department of Public Safety spokeswoman Katherine Cesinger said. Before the vehicle came to a complete stop, the driver “pointed a rifle toward the rear window of his car and fired several shots” toward the patrol car stopping him. The gunshots struck one of two troopers inside the patrol car, Cesinger said, after which the gunman fled “and continued shooting innocent people,” including two police officers.

Gerke said that in addition to the injured officers, there were at least 21 civilian shooting victims. He said at least five people died. He did not say whether the shooter was included among those five dead, and it was not clear whether he was including the five dead among the at least 21 civilian shooting victims.

Shauna Saxton was one of the terrified drivers who said she was a target of the suspect during his rampage. She was driving with her husband and grandson in Odessa and had paused at a stoplight when they heard loud pops.

“I looked over my shoulder to the left and the gold car pulled up and the man was there and he had a very large gun and it was pointing at me,” she told TV station KOSA.

Saxton said she was trapped because there were two cars in front of her. “I started honking my horn. I started swerving and we got a little ahead of him and then for whatever reason the cars in front of me kind of parted,” she said sobbing. She said that their vehicle escaped from him but they heard three more shots as they sped away.

The shooting comes just four weeks after a gunman in the Texas border city of El Paso killed 22 people after opening fire at a Walmart. Texas Gov. Greg Abbott this week held two meetings with lawmakers about how to prevent mass more shootings in Texas. He said he would visit the area Sunday.

The West Texas shooting Saturday brings the number of mass killings in the U.S. so far this year to 25, matching the number in all of 2018, according to The AP/USATODAY/Northeastern University mass murder database. If it turns out the shooter is not among the five dead, the number of victims for this year has already reached 140, the level of all last year.

Seven people remained in critical condition at one hospital hours after the West Texas shooting, said Russell Tippin, CEO of Medical Center Hospital in Odessa. He said a child under 2 years old was also transported to another hospital. He also said one person the hospital had received had died, although it was unclear if that victim was among the five dead that Gerke reported.

Tippin said 13 shooting victims were being treated at the hospital Saturday evening but he did not give their conditions or other information about the victims. Social workers and professional counselors are at the hospital to provide support to the families of shooting victims, Tippin said. He also said the hospital has been locked down for that safety of the staff and patients.

Dustin Fawcett was sitting in his truck at a Starbucks in Odessa when he heard at least six gunshots ring out less than 50 yards behind him.

At first, he thought it might have been a tire blowing but he heard more shots and spotted a white sedan with a passenger window that had been shattered. That’s when he thought, “Oh man, this is a shooting.”

Fawcett said authorities responded quickly and when police pulled out their rifles and vests he knew that “this is not a drive-by. This is something else, this is something bigger.”

Vice President Mike Pence said following the shooting that President Donald Trump and his administration “remain absolutely determined” to work with leaders in both parties in Congress to take such steps “so we can address and confront this scourge of mass atrocities in our country.”

Pence said Trump has deployed the federal government in response to the shootings. He says Trump has spoken to the attorney general and that the FBI is already assisting local law enforcement.

Trump has offered contradictory messages in reacting to recent mass shootings. Days after the El Paso and Ohio shootings he said he was eager to implement “very meaningful background checks” and told reporters there was “tremendous support” for action. He later backed away from those changes, saying the current system of background checks was “very, very strong.”

Most recently, Trump has called for greater attention to mental health, saying that new facilities are needed for the mentally ill as a way to reduce mass shootings. However, some mental health professionals say such thinking is outdated, that linking mental illness to violence is wrong, and that the impact of more treatment would be helpful overall but would have a minor impact on gun violence.

Odessa is about 20 miles (32 kilometers) southwest of Midland. Both are more than 300 miles (483 kilometers) west of Dallas.