Dean Jay Fletcher, 54, was facing charges in Tonga in connection with the death of his Canadian wife in June.
Kaniva News reports he was arrested in Pago Pago yesterday.
Meanwhile a team of investigators from Tongatapu have arrived in Vavaʻu to investigate the circumstances surrounding the escape of Fletcher.
“I have obvious concerns over this matter and people will be held to account if accepted procedures have not been followed” says Commissioner Steve Caldwell in a statement from Police.
