There was a second explosion today in Bangkok at about 1.20pm, a day after a shrine in Bangkok was bombed. Yesterday's explosion killed 21, including four who were Chinese.
The second explosion took place at a Sathorn ferry pier near a busy bus station. There were no injuries or damage, police say.
Police officer Worapong Boonthawee said an explosive device was thrown from Taksin Bridge and blew up at Sathorn Pier after falling into the Chao Phraya River below.
Sathorn pier is a popular stop for Chinese tour groups. It is a terminal for Chao Phraya commuter boats and it is situated near the Skytrain station.
Police suspect that the device thrown was a grenade. They have closed Sathom Road to traffic from the pier to the Saphan Taksin bus station.
A suspect has been found
A suspect has also been identified in relation to the shrine bombing on Monday, Thailand's junta chief Prayut Chan-O-Cha said today.
He said that the man responsible for the shrine bombing was seen on closed circuit television at the blast site. "Today, there is a suspect ... we are looking for this guy," Chan-O-Cha said.
He also said he believed Facebook messages that seemed to warn of some danger to Bangkok ahead of the bomb came from an anti-government group based in the north-east of Thailand, the site of the country's anti-coup Red Shirt movement.
"We are looking for them now, some of them are in Isaan [northeastern Thailand]," he said.