HUMBLE, Texas -

According to the Timberwood Middle School website, two boy's restrooms at the school were defaced with graffiti.

The words, "TMS next Sandy Hook May 10," were written on the stall doors. Because the graffiti alleged a threat, police are working with school officials to investigate.

There are several students who have been identified that may have been responsible.

Appropriate precautions are being taken to ensure the safety and security of the campus and students, but there is no evidence of a credible threat or that this is more than graffiti at this point.

There will be additional police presence on campus this week.