Thai officers guard at a hospital in Bangkok (Source: VNA)Thai police said that the ping pong-sized bomb was hidden in a plastic bag in a bush and was opened by a city cleaner.
The blast came a day after Thai authorities arrested a suspect in connection with an explosion last month at a military-run hospital in Bangkok that injured at least 24 people.
After the attack, authorities of Thailand have stepped up security measures and ordered nationwide security agencies to be on alert.-VNA
VNA
