Two men were shot and killed in separate daytime incidents in the District on Friday, and at least three others were shot and wounded Saturday, the police said.

The attacks came at a time when the city, according to police chief Robert J. Contee III, faces “a rising tide of gun violence.”

In the killings, Isaac Aull Jr., 30, of Northeast Washington was found about 1:10 p.m. in the 1600 block of Franklin Street NE, police said.

Delonte Johnson, 28, of Southeast was found about 1:40 p.m. in the 4600 block of Hillside Road SE, police said. A second man was wounded there, they said.

The slayings raised the number of homicides in the city so far this year to 83, about 16 percent more than at the same time last year.

One of Saturday’s daytime shootings occurred on 14th Street NW. The street, a major traffic artery, runs through the Columbia Heights neighborhood.

A man was wounded after a car stopped at 14th and Oak streets about 3:30 p.m., and people got out and began firing, police said.

In surveillance video provided by the police, four people emerge from the car, and at least two appear to be pointing guns.

One of the two is on the passenger side of the vehicle in the rear, using both hands to grasp a weapon with an extended magazine. The other armed individual points what seems to be a handgun. The reflection of the sun shines from the top of the car.