PARSIPPANY, N.J. — Exterminators are battling bedbugs in New Jersey’s new $200 million psychiatric hospital.

The bugs have been found in a patient’s bedroom and in staff areas of Greystone Park Psychiatric Hospital in Parsippany.

The nearly 500-patient state facility opened last year.

Human Services Department spokeswoman Ellen Lovejoy says the first bedbug sighting was on Nov. 11. When a few more were found days later, Lovejoy says an extermination company that employs dogs to sniff out the bugs was brought in.

Lovejoy says no patients have been bitten.

Lovejoy says the hospital has responded by aggressively cleaning affected areas.