One article said he stole their guns: https://www.kxan.com/news/texas/tdcj-escaped-murderer-linked-to-5-more-deaths-stole-pickup-in-leon-county/
“Lopez was on a transport bus with 15 other inmates and two guards when he stabbed one of the guards. He drove the bus a short distance before he fled on foot,”
What was the other guard doing?