Okinawa Gov. Takeshi Onaga will join a rally later this week to protest the relocation of a U.S. military base's operations within the prefecture, a prefectural government source has said.

Onaga, who was elected on an anti-base platform in 2014, was last year forced to withdrew the revocation of his predecessor's approval for land reclamation work following a Supreme Court ruling.

It would be the first time the governor takes part in an anti-relocation rally held in the Henoko district.