From Inside Edition.

Police rushed to a report of an armed suspect waiting outside a house. A frantic homeowner called 911 thinking an assassin was lying in wait. After police closed in, they found that it was actually a kid with a water gun taking part in a nationwide craze called "senior assassin" that is causing chaos across the country this graduation season. The student was briefly detained and released when cops realized it was a prank. Authorities are issuing a warning that senior assassins can be dangerous.