Police released a video Tuesday showing a man who they say left a package that exploded outside a Riverview Gardens elementary school last week.

No one was injured in the small explosion Wednesday outside Moline Elementary School, at 9865 Winkler Drive, but the blast caused minor damage to the doorway when glass broke.

The video, posted by police on YouTube, shows a man walking across the lawn of the school at 12:09 p.m. on Sept. 7.

He is carrying a bag in his left hand. He then disappears out of view of the surveillance camera. The man is then seen again coming back the way he came. A cloud of smoke from the small explosion is off to the right.

Students and teachers were inside the school when it happened. They were evacuated as a precaution. At least 375 students from K-5 were taken to Westview Middle School a few blocks away. A few nearby residents were also evacuated. Riverview Gardens canceled classes for the following day.