Investigators rule out Uighur Muslim link as they seek help from Interpol.
Cabbie claims he picked up man resembling the suspect after bombing.
Mourners gathered at Ratchaprasong intersection to pay tribute to those who died during a blast in Bangkok.
Chan, originally from Hong Kong, was killed in the bomb blast at the Erawan Shrine.
Video shot on a mobile phone on 17 August, captured the moment of the explosion outside a Hindu shrine.
Suspect moves unnoticed through crowds moments before 22 people killed in the attack in Thai capital.
At least 12 people have died in blast near to Hindu shrine in Thailand capital
BREAKING: Blast took place in Ratchaprasong, in the centre of the Thai capital.
The 63-year-old royal led thousands of cyclist in honour of his mother, Queen Sirikit
The Thai women wearing short red dresses and high heels provoked anger by their racy dance at the Wat Chaiwatthanaram temple.
Up to defence team to choose what evidence to be re-tested, says lead lawyer Nakhon Chompuchat.
Families of Hannah Witheridge and David Miller arrive in Thailand as court will hear murder charges against Burmese duo.
The local telecoms employee, aged 28, died in hospital after the attack.
But don't be a slob, school warns
Engineers have come up with a scheme to build a canal across Thailand.
The team's Thai owners and sponsors have been asked to examine their role in the scandal.
Lawyers for two men accused of murder of British tourists claim they are being denied access to key evidence.
Key activists detained by security forces and later released after their attitudes were 'adjusted'.
Indonesia says most stranded people are 'illegal labourers' seeking jobs in Malaysia.
Charity in charge of baby Gammy's donations finds his Australian parents are trying to access the funds.
Shinawatra faces up to 10 years in jail over controversial rice subsidy scheme.
Foreign ministers of Malaysia and Bangladesh will discuss worsening migrant crisis as Myanmar bristles.