LINCOLN, R.I. (AP) — An envelope containing white powder sent to the Community College of Rhode Island in Lincoln that forced a campus-wide evacuation has been found to be non-hazardous.

The college canceled classes at the Flanagan campus on Friday afternoon after a professor received an envelope containing an unknown substance. Campus officials notified the Lincoln police and fire departments.

The school said later the substance was found to be a sugar-based product. A sample is being sent to the state Department of Health for further testing.