A standoff in Midland is over and the suspected gunman behind a mass shooting that injured 11 people and killed another is dead, according to the city’s mayor.

Midland Police confirmed they were called to a shooting near the 4600 block of West Wall Street and that officers reported hearing gunfire coming from the building, and that they worked quickly to secure and clear the area.

Midland Mayor Lori Blong posted on social media at about 11:30 a.m. that “the active shooter situation has ended and the shooter is confirmed deceased.” Further details have not been released.

The city has not confirmed the identities or conditions of the victims. The Associated Press said Midland Memorial Hospital reported four people were in the operating room and five others were in stable condition. The conditions of the others are unknown.

“My heart breaks for the victims and their families. We are praying for every person touched by today’s events and for the law enforcement officers who risked their own safety to protect our community,” Blong said.

The Associated Press reported the shooting started around 8 a.m. in one part of the city before ending up near a veterinary hospital. Andrea Mendias, who works at an automobile body shop near the veterinary hospital, told the AP he heard at least 40 gunshots. Video from Mendias showed police officers pouring out of the back of an armored police vehicle and police sending robots into the area.

Midland Police were engaged in a standoff with the suspected gunman for about three hours after the shooting was first reported. Armored units were deployed, and state agencies were called in to assist.

Police said the shooting and standoff were near Fasken Drive and Wall Street and that the area should be avoided. Blong said that though the standoff has come to an end, police activity in the area will be ongoing for several hours, and traffic will continue to be impacted.

There is a family reunification center at Midland Memorial Hospital for victims and residents.

At 11 a.m., the city said there is no need for blood donations, but food and donations can be given to the United Way of Midland.

Midland, a West Texas city with about 140,000 residents, sits in the heart of the state’s oil region and was near the site of a deadly shooting rampage just six years ago. In that shooting, a gunman who had been fired from his oil services job killed seven people and wounded two dozen others while firing at random while driving around the Odessa and Midland areas.

Midland and Odessa are more than 300 miles west of Dallas-Fort Worth.

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