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MEMPHIS, Tenn. — Shots rang out while people were gathered at a vigil to remember a victim of gunfire.

The shooting happened around 8:15 p.m. at Mississippi Boulevard and St. Paul Avenue, where a vigil was being held for Myneisha Johnson, an 18-year-old who was killed by a stray bullet downtown. Friends were marking the one-year anniversary of her death.

Witnesses say as soon as they started lighting candles, two cars pulled up and started shooting. Witnesses told WREG they heard more than 100 gunshots.

Police said one of the victims is in critical condition and two others are noncritical. Police originally said there was a fourth victim but later said they could only confirm three who were shot; they are checking local hospitals for any other victims.

A preliminary investigation shows two parties got into a confrontation, and the vigil was a separate group that got caught in the crossfire.

Police think the shots were fired from vehicles but have not confirmed that yet.