Authorities are offering a $1,000 reward for information leading to the arrest of the person or people responsible for a Naperville arson in April.

The arson happened about 1 a.m. April 30 at 2816 Alameda Court, according to Naperville police. A Molotov cocktail was thrown through a broken window of the vacant residence.

Anyone with information should call (630) 420-6006 or visit napervillecrimestoppers.com. Tips can be left anonymously.