EMMAUS, Pa. -

A second student at Emmaus High School in Lehigh County has been arrested in a series of bomb threats made against the school last month.

The teen suspect was caught in the act while making a threat, said Thomas Seidenberger, superintendent of the East Penn School District.

A 9th grade student was arrested last month for making a threat last year, officials said.

There's still a $2,000 reward out through Lehigh Valley Crime Stoppers for a third  unsolved threat.