Police in Thailand say a key suspect in last month's deadly bombing of a popular Bangkok shrine has confessed to providing the illegal explosive materials used in the explosion.

Although the suspect, Yusufu Mierili, denies being responsible for the attack, he admits to handing over a bag with an explosive device to the man who bombed the Erawan Shrine.

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"We have informed him (Yusufu) of the charge of jointly possessing and owning explosives that are banned by the government. He acknowledged the charge and confessed (to it)," National Police spokesman Prawut Thavonsiri said on Monday."Yusufu said the backpack that he carried was heavy and it was a bomb."

On Wednesday, police escorted Yusufu to the scene of the blast, which left 20 people dead and many others injured. The suspect re-enacted how he allegedly handed over the bomb to the other suspect.

On Tuesday, Yusufu was also transported to several apartments in Bangkok where authorities found materials for making bombs and other fake passports. The suspect lived in one of these apartments with a man called Adem Karadak, who has since been arrested.

Yusufu was apprehended last week as he attempted to cross the Thai border into Cambodia. He was arrested with a Chinese passport and a piece of paper containing writings of a chemical formula used for making explosives. His nationality has not been confirmed although he spoke Turkish through during his interrogation.

Authorities are still searching for the bomber, who cameras caught wearing a yellow T-shirt. He placed a backpack at the shrine and disappeared shortly before it detonated.

Since investigations began into the Aug. 17 blast, authorities have arrested two foreign suspects and have issued 11 arrests warrants. The latest warrants were issued last week for two suspects. One of the suspects has been identified as Abdullah Abdullahman. The other is a male foreigner, nearly 175 cm (5 feet, 8 inches) in height. Police don't yet know his name, but have published a CCTV photo of the suspect leaving a department store.

The suspected mastermind of the attack is still being hunted for. Investigators believe he fled Thailand a day before the deadly blast.

TagsBangkok Bombing, Erawan Shrine Bombing, Yusufu Mierili, Abdullah Abdullahman, Thailand