East Lansing and Michigan State University police are sweetening the pot in trying to get information on who was involved in the melee in the city over the weekend after the Spartans win over Ohio State.

Offering now a 20-thousand dollar reward.  Police are hoping the cash will convince even a friend of the culprits to contact authorities and turn them in.

There's no word yet on just how much damage was caused late Saturday night and early Sunday morning but at least 57 fires were set when hundreds flooded the city after the game.  So far, 15 people have been arrested but police are promising more to come .