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A Greyhound bus pulls out of a driveway of a diner in rural Washington state in 2004. Getty Images

UPDATE: 9:30 p.m. EDT -- Virginia Gov. Terry McAuliffe issued a statement Thursday night after the death of State Trooper Chad Dermyer.

"Like so many brave Virginia men and women, Trooper Dermyer put on a uniform and risked his life every day to keep us safe, first as a U.S. Marine and then as a police officer," the governor said.

A tweet from the governor contains his full statement:

UPDATE: 9:11 p.m. EDT -- Virginia State Trooper Chad Dermyer has died from his injuries after being shot at a bus station in Richmond, Washington's WUSA-TV reported.

Dermyer had encountered a man at the bus station as police were conducting a training exercise. As they were speaking, the man pulled out a gun and shot Dermyer, WUSA-TV reported.

Two state troopers then returned fire, striking the suspect, who later died at a hospital. State police have not identified the suspect.

Two bystanders also were shot at the bus station, a State Police spokesperson said. Both were said to have non-life-threatening injuries.

UPDATE: 5:19 p.m. EDT — Police were conducting a drug training exercise when a fatal shooting occurred Thursday at the Richmond, Virginia, Greyhound bus station, Richmond's WWBT-TV tweeted. U.S. Sen. Mark Warner of Virginia offered his prayers and condolences to the victims and first responders.

Virginia State Police reportedly were trying to contact the family of a state trooper who was injured in the gunfire.

UPDATE: 5:02 p.m. EDT — The suspect in a fatal shooting Thursday at a Greyhound bus station in Richmond, Virginia, was killed by police officers inside the facility, according to a BreakingNews.com news alert. One member of law enforcement responding to the shooting was shot and battling life-threatening injuries. Earlier reports of a state trooper being shot and killed were wrong, Virginia State Police spokeswoman Corinne Geller reportedly said.

In addition, two bystanders were hurt in the shooting and suffered non-life-threatening injuries.

Police said during a news conference that four people, not six, were shot during the episode, not including the shooter.

UPDATE: 4:49 p.m. EDT — Virginia Gov. Terry McAuliffe has offered Richmond and its law enforcement agencies “whatever state resources may be necessary to respond to” Thursday’s fatal shooting at the city’s Greyhound bus station that killed at least two people, including a state trooper, the governor said in a brief statement.

A number of people injured in the shooting reportedly were taken to Virginia Commonwealth University Medical Center, though it was not clear immediately how many people were hurt.

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UPDATE: 4:25 p.m. EDT — Greyhound has closed its bus station in Richmond, Virginia, after a fatal shooting broke out there Thursday afternoon, leaving at least two people dead and more injured. Travelers leaving from or arriving at Richmond should click here to learn about plans to reroute customers or reissue tickets, the bus company said in a brief statement.

At least three law enforcement agencies — the Richmond Police Department, Virginia Commonwealth University’s police force and State Police — have responded.

Richmond City Council member Reva Trammell told the local NBC affiliate the shooting marks one of the “saddest days” she’s ever seen.

UPDATE: 4:08 p.m. EDT — At least two victims from a shooting at a Greyhound bus station in Richmond, Virginia, have died, according to a media report. One of the deceased is a state trooper, WWBT-TV, Richmond, tweeted.

State Police were apparently conducting a training operation of sorts at the bus station when the shooting broke out. Details on the reported training exercises were not immediately available.

UPDATE: 3:58 p.m. EDT — A suspect was in custody and multiple victims were in the hospital in Richmond, Virginia, Thursday afternoon following a shooting at a Greyhound bus station. Police Chief Alfred Durham told reporters six people were wounded, two of them critically, during the incident, which remained under investigation, WTVR-TV, Richmond, reported. Further details were unclear.

Two of the injured were Virginia State Police troopers, WWBT, Richmond, reported.

The state police had not yet posted an official statement on its website or Facebook page.

UPDATE: 3:41 p.m. EDT — The number of victims was unclear Thursday after a shooting at a Richmond, Virginia, bus station. Citing the local police chief, WTVR, Richmond, reporter Melissa J. Hipolit tweeted six people were wounded, but CNN reported three people had been taken to the hospital.

Police responded to the scene, the Greyhound station at 2910 North Blvd., about 2:45 p.m. Open carry is legal in Virginia except where explicitly forbidden, according to the state police website.

UPDATE: 3:30 p.m. EDT — WBBT, Richmond, Virginia, reported Thursday a suspect was in custody in a shooting at a Greyhound bus station in Richmond. Citing Virginia State Police via CBS, Reuters tweeted there had been three people injured — including an officer.

Original story:

Various Virginia news stations tweeted Thursday afternoon police in Richmond were responding to an active shooter situation at a Greyhound bus station. There could be as many as four people injured in connection with the incident, WRIC, Richmond, reported.

This is a developing news story. Check back for updates.