Pol Col Vichayakor Nichabovorn, deputy police spokeswoman, said Pol Lt Gen Winai would appoint four teams -- an investigation team, forensic science team, explosives verifying team and explosive experts team. They would be tasked to prevent further such incidents at protest sites, and investigate and arrest the attackers.
She said national police chief Adul Saengsingkaew had also ordered a faster response to entering areas where bomb attacks were reported, and that the mobile teams must carefuly prove their case and also seek cooperation from the public.
The move follows repeated attacks on protest rally sites in Bangkok, the latest on Thursday night at Chaeng Wattana road against the site occupied by anti-government protest leader Luang Pu Buddha Issara and his supporters.
On Wednesday night, four M79 grenades were fired at the Royal Thai Police Sports Club, where the Centre for Maintaining Peace and Order (CMPO) is based, and the adjacent Thai PBS television station on Vibhavadi Rangsit Road. There were no injuries.
Earlier in the week, M79 grenades were fired at the Democrat Party headquarters, the Civil and Appeal courts, and a gas station near the CMPO.
A fatal M79 grenade explosion at Ratchaprasong intersection last Sunday afternoon killed three people, including two young children going shopping with their aunty, and injured 21 other people.