Thai police investigates the bombing site (Source: EPA/VNA)

Bangkok (VNA)
- Thailand’s authorities on May 24 ruled out the possibility of southern insurgency group’s involvement in a bombing attack at the Phra Mongkutklao military hospital in Bangkok and believed political motive was behind the attack.

Royal Thai Police Deputy Commissioner Srivara Rangsibhramanakul said there was no evidence to indicate that the May 22 bombing was connected to the armed group in the south.

It closely resembles five bombing attacks during the period of political unrest in 2007 due to similarities of bomb fragments and explosive collected by forensics experts, he noted.

The officer also revealed that three days prior to the bombing, a warning was sent to Thailand’s National Cancer Institute near the military hospital and it was not a normal move of the southern group.

The blast occurred on May 22, which was the day when the military junta seized power from the Yingluck government three years ago. It happened in front of the “Wongsuwan” room inside the hospital that was named after Thai Minister of Defence Prawit Wongsuwan who was reportedly treated at the hospital.

Investigators said it is likely that the bombing was carried out by a well-organised political group with link to foreign nations.

In a related move, former Prime Minister Yingluck Shinawatra visited victims of the attack on the same day while Pheu Thai Party issued a statement condemning it as an inhumane act.-VNA