Tonga Police are still searching for Amoni Fifita, who is in his 20s.
Police have said Fifita is considered dangerous and members of the public have been warned not to approach him.
Kaniva News reports this was the second time he has escaped from Police custody.
On January 31 Fifita and another inmate escaped the Central Police Custody and robbed a shop owner at gun-point.
They were arrested two days later after the other inmate was located at Hofoa while Fifita was found at Ha’ateiho.