HOUSTON -- The city of Houston is cracking down on graffiti during spring break, KPRC Local 2 reported Friday.

Houston police will be out in full force to make sure there is no vandalism.

There is normally an increase of graffiti during spring break, officials said.

"Please enjoy spring break," city councilwoman Sue Lovell said. "Please use your talents in a productive way. Please don't go about our city putting graffiti on buildings without permission that will cost us millions of dollars."

Councilman James Rodriguez warned students that painting graffiti is a crime.

"Read a book. Get a sketchpad if you feel the need to draw," he said. "Definitely do not go out and vandalize public property. It's a serious offense and we're going to be out there in full force this week enforcing our laws."

Graffiti was found at Oak Forest Middle School on Thursday. The school district will have to spend several thousand dollars to get rid of it.

A reward was offered for information about graffiti.

"Parents, if your children are spray painting on the sides of buildings or homes, that's a felony," Crime Stoppers spokeswoman Katherine Cabaniss said. "It seems amazing in this time that there are people who still don't recognize that this type of activity is a criminal offense."

Anyone with information about graffiti was asked to call Crime Stoppers at 713-222-TIPS.