Two people were fatally shot and two others were wounded in the District on Monday evening in three incidents in less than two hours. Police said one of the shooting victims was found near the Washington Convention Center, but his death had not yet been ruled a homicide.

That man was found about 5:45 p.m. in the 1100 block of 11th Street NW, police said. The address is about three or four blocks northwest of the convention center. Based on neighbors’ reports, the man who was slain had apparently been sitting in a parked, late-model vehicle.

The street, which usually carries heavy rush-hour traffic, was shut down by police.

A neighbor said the driver’s side window had apparently been smashed. It was not clear whether that was by a gunshot or by efforts to enter the car. It was not known whether a weapon was found.

The man died at a hospital.

A police spokesman said that as of Monday night, officials had not concluded that the death was a homicide, and described the inquiry as “a death investigation.”

Within a half-hour of that incident, a man was found shot in the 1000 block of Taylor Street NE, police said.

He died at a hospital. The incident was declared a homicide, but no further information was immediately available.

In the third incident, two people described by police only as male juveniles were shot about 7 p.m. in the 3400 block of 24th Street SE, police said.

According to initial reports, one of them apparently went to a hospital on his own; it was not known how the other reached the hospital.

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