The West Covina Unified School District said a student came forward last week to report the substitute was viewing inappropriate images on his cell phone while on school grounds at Cameron Elementary.
[Ads /]
The district said the teacher was immediately removed from campus.
In a statement, the district said "The WCUSD holds the safety and security of its students as paramount and will not tolerate any actions that compromise our students' welfare."
[Ads /]
The district is cooperating with law enforcement as the investigation continues.