Two of the four Japanese men suspected of involvement in a series of robberies across Japan are set to be extradited from the Philippines on Tuesday.

Fujita Toshiya and Imamura Kiyoto will be sent home following negotiations between the countries' governments over their extradition. Japanese police officers, who were dispatched to the Philippines on Monday, will arrest them during a flight back to Japan.

They have been held at an immigration facility in the Philippines along with the other two, Watanabe Yuki and Kojima Tomonobu. Japanese police have obtained arrest warrants against them on charges of fraud.

The four are suspected of running telephone scams from the Philippines, as well as orchestrating a series of robberies across Japan. Japanese police suspect Watanabe is the mastermind behind the scheme.

While there are no legal hurdles that hamper the handover of Fujita and Imamura to Japan, Watanabe and Kojima are embroiled in unrelated criminal trials in the Philippines, which are blocking their extradition. A local court has yet to decide whether to dismiss those cases.

Philippine officials want to hand over all the suspects before Philippine President Ferdinand Marcos Jr. begins his visit to Japan on Wednesday. Justice Secretary Jesus Crispin Remulla called on the Philippine court to make a decision by Tuesday.