BREAKING: One dead, 28 injured in shooting at Chicago-area Juneteenth event

The shooting took place in a parking lot outside a shopping center in what officers are calling "a illicit street takeover" in which 200-300 people were gathered.

Shots rang out around 12:30 am on Sunday, in DuPage County, near the intersection of Honeysuckle Rose Lane and Route 83. Officers are still grappling with the full tally of victims.

"It was supposed to be like a Juneteenth celebration; we just started hearing shooting, so we dropped down until they stopped. They just kept going. After that, we literally scattered away," said witness Markeshia Avery, according to ABC.

Another witness said "We were all just out, and, next thing you know shots just kept going off; everybody ran, and it was chaos."

"We just heard gunshots; at first it was one, but then it was a whole bunch of gunshots. After then we started running like, 'yo.' I looked at my friend, and we took off, running like crazy," another witness, Zavier Sheikh, said.

Police remained on the scene until 9 am local time.

Juneteenth is a recently created nationally holiday that has been celebrated in Texas and within the black community prior to its national recognition. It commemorates the anniversary of those who were enslaved in Texas learning that they had been freed by Lincoln's Emancipation Proclamation, two years after the fact.

This is a developing story and will be updated.