Five Malaysians were arrested at Tokyo's Haneda Airport on Saturday after Japanese authorities found cocaine concealed beneath their shoe insoles.PETALING JAYA: Federal police will send a team of investigators to Japan following the arrest of five Malaysians attempting to smuggle about 5kg of cocaine at Haneda Airport in Tokyo.

Bukit Aman narcotics criminal investigation department director Hussein Omar Khan said the officers would investigate whether the Malaysians have ties to local or international drug syndicates.

He said Japanese authorities are also investigating the source of the drugs and identifying other syndicate members, Harian Metro reported.

The five Malaysians were arrested on Saturday after Japanese authorities found the cocaine concealed beneath their shoe insoles. They are believed to have brought the drugs from KLIA.