Yameen, who was defeated in a September election, was interviewed by police on the honeymoon islands on Saturday.
He has been dogged by allegations that he received close to USD 1.5 million in illicit payments during his failed bid for re-election in the Indian Ocean archipelago nation.
The country's monetary authority has lodged a police complaint about the alleged donations made into a private account held by Yameen in two suspicious tranches, local media reported.
The former strongman president, who ruled the popular holiday islands with an iron fist, jailing or exiling his opponents, has denied the allegations.
Solih departed for India on Sunday on his first official visit abroad since assuming office.
Yameen's five-year tenure was marked by the jailing of all his key rivals most of whom have returned to the country after his toppling.
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