At least four major shootings broke out across the United States over the Easter weekend,

including one at a party in Pittsburgh that left two teenagers dead and several others injured early Sunday.

The violence comes after President Joe Biden announced tougher gun regulations last week in the wake of multiple mass shootings.

Pittsburgh police said in a statement Sunday that officers were called

to the reports of a shooting just after 12:30 a.m. at an Airbnb rental property.

When they arrived, additional shots were heard in the immediate

area and "several young people" were seen fleeing the area on foot and in vehicles.

Police said that at least 10 people were injured in the incident.

Two of them, Jaiden Brown and Mathew Steffy-Ross, both 17, were pronounced dead at a hospital,

the Allegheny County Medical Examiner's Office confirmed to NBC News.

4 major shootings