HATBORO, Pa. -

Crews were sent in to clean-up at the Montgomery County home of the man arrested for sending poison to a rival.

Decontamination crews were at the Hatboro home of Nicholas Helman Tuesday.

Helman was arrested earlier this year for allegedly sending a card laced with ricin to his ex-girlfriend's new boyfriend.

Crews say they aren't sure if there is any ricin at Helman's apartment on the 100 block of Byberry Road, but they say they're not taking any chances.