The cylinder was about 10 inches long and 4 inches wide. Officials didn’t say what prompted them to check Lidia Alvarado, 44, but authorities have raised the security level at jails across the country, fearing inmates may be planning something. Alvarado was visiting two inmates serving 25 and 30 years when she was arrested. She now faces drug and weapons charges.
Police who inspected the M-67 grenade said it was in working condition.
(Found by Chion Wolf, thanks)