A gunman opened fire at what appeared to be a Fourth of July holiday block party in Gary, Indiana, on early Tuesday morning, killing at least three people and injuring seven others. 

Deputies with the Gary Police Department responded to the scene around 12:45 a.m. after receiving reports of “several people with gunshot wounds.”

The responding officers found three people unresponsive. The Lake County Coroner’s office identified them as 26-year-old Marquise Hall, 25-year-old Laurence Mangum, and 20-year-old Ashanti Brown. 

Seven others were found with gunshot wounds at the scene. They were rushed to local hospitals. Their conditions were not known. 

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Police said initial information indicated a holiday block party “may have been going on when the shooting erupted.”

“Due to the enormity of the scene, mutual aid was requested from surrounding police agencies,” according to police.

Anyone with any information on the incident is requested to contact the Metro Homicide Unit at (219) 755-3855 or the Crime Tip Line at (866) CRIME-GP. 

The shooting comes hours after a man fired on an Independence Day parade from a rooftop in suburban Chicago, killing at least six people. Over 30 others were injured in the shooting. The suspect,  identified as Robert E. Crimo III, has been taken into custody. 

This is a developing story