A 52-year-old man has been charged with sexually assaulting his own mother, reports say.

Nuku’alofa Central Police Station. Photo/Kalino Lātū

Local media reports said that the incident happened at a Tongatapu 8 village.

It is unclear what triggered the accused to allegedly attack his “elderly mother”.

One report described the allegation in Tongan as “ala kovi he konga tapu ‘o e fa’ee”.

This translates into English as “touching the private parts” of the victim.

Last year a 76-year-old man was arrested for the indecent assault on a minor under the age of 15, after a family member reported the offence

In 2012 a 61-year-old father was charged by police with 12 counts of indecent assault and attempted incest on his 13-year-old daughter in ‘Eua.