AT least two people have been killed and nine injured in a mass shooting.

Philadelphia cops revealed that three teens were among those wounded following the horror that unfolded on Memorial Day. 

A man and a woman lost their lives following gunfire at a park in the city, where families had assembled earlier to commemorate Memorial Day.

Their identities have not yet been released.

The three injured teens, 15, 16, and 17, are said to be in a stable condition at the hospital.

The other injured victims are also stable, according to police.

Cops revealed that several rounds were fired and are hunting several suspects, as reported by the NBC affiliate WCAU-TV.

Police are also yet to find any weapons related to the shooting. 

Cops sealed off the park as part of their probe and say the investigation remains ongoing.

A mass shooting is an incident where there are at least four casualties or fatalities, according to the Gun Violence Archive.

So far this year, there have been more than 120 mass shootings across the US.

Four people were injured after shots were fired near an apartment in Alexandria, Virginia.

Cops revealed that an argument broke out at a bar before gunshots were heard, as reported by the NBC affiliate WRC-TV.

Between 10 and 15 shots were fired, neighbors told the outlet.

A spate of violence was reported across the Memorial Day weekend.

Eleven people were taken to the hospital after a shooting erupted by a marina in a South Carolina beach town.

In Chicago, two people were killed while 16 were left injured.

Meanwhile, in Albuquerque, New Mexico, three people were found shot to death inside a home.

The victims were identified as Stephen Bockemeier, 76, and his wife Marcia, 77.

The couple’s adult son, Erik, 48, was also found dead inside the home.

Cops are probing their deaths as a suspected murder suicide.

The couple’s other son, Andrew, died by suicide and cops say it’s likely he shot his parents and older brother.