All of eight sustained minor injuries and received treatment at Pattani Hospital.
Police said the explosion erupted at 6.50 am in front of a shop on Charoon Samran Road, just three metres away from where the monks received alms from people.
Three soldiers were at the scene because they were providing a security escort to the two monks, who were injured by another explosion last year.
A police inquiry found the bomb was hidden under a concrete sheet and detonated by a cell phone.
Meanwhile, a man was shot dead in Pattani’s Panare district. Police are investigating to determine whether the fatal shooting was related to the unrest or a personal conflict.