BANGKOK : A bomb exploded outside a Bangkok shopping centre that had also been targeted in a wave of New Year's Eve attacks, police said Tuesday.

No one was injured when the device blew up at a phone booth in front of the shopping and cinema complex in the northern Major Ratchayothin district.

"There is a row of three phone booths and the bomb exploded in one of them. The glass was shattered, but there were no casualties," Bangkok city police spokesman Colonel Supisan Pakdinarunart said.

The centre was among nine places in Bangkok bombed on New Year's Eve, when three people were killed and dozens injured in blasts around the capital.

Those blasts were followed by a coordinated arson and bombing spree across the insurgency-hit southern provinces at the start of the Lunar New Year.

They left nine people dead and 44 injured and were blamed on Islamic separatists.

Army officials have warned of possible attacks during upcoming Buddhist New Year celebrations, which begin Friday and run over five days. - AFP/ch