A 7-year-old was shot in Chicago while trick-or-treating Thursday evening by a gunman targeting someone else, police said. The girl is in critical condition.

"This is unacceptable," Chicago police spokesman Rocco Alioto said, according to NBC Chicago. “This was a 7-year-old girl that was trick-or-treating and happened to be shot because a group of guys wanted to shoot another male with a street full of kids trick-or-treating."

The 31-year-old was hit in the left hand and the girl was hit in the lower neck, police said. There is no relationship between the victims, writes NBC News.

In video posted by NBC Chicago, people are seen running before seven shots are heard, and then people are seen running from the area, at least one of whom was in a Halloween-style mask.

The girl was not the intended victim, Chicago police spokesman Anthony Guglielmi tweeted. He called the violence a "senseless incident."