FREEPORT - Police say a teacher in the Massapequa School District has been arrested for possession of heroin.

Kerri A. Creegan, 33, of Rockville Centre, was driving southbound on Babylon Turnpike with a defective tail light and was stopped by police. During the traffic stop, police say Creegan was found to be in possession of a glassine bag containing heroin.

Creegan was arrested at the scene and is charged with criminal possession of a controlled substance.

Creegan teaches ninth-grade social studies at Massapequa High School's Ames campus.

Creegan is expected to be arraigned on Monday.