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(Image: PH)

The 22-year-old – only named as Rohan protect his mum’s identity – was arrested after the incident in Patan, India.

Detectives believe the Rohan snuck into his 46-year-old mum’s room while she was sleeping.

When she awoke he claimed he was looking for water, before forcing himself upon her and gagging her.

Neighbours heard the struggle – but due to frequent fights between the pair they did not think to intervene.

Cops said Rohan was addicted to watching porn on his mobile phone.

(Image: GETTY [STOCK])

The man would obsessively watch sex videos until the early hours of the morning every night, police said.

And he is said to have even watched pornographic material while in the presence of his mum and sister.

The victim reported the crime to the police, and alleged he had previously made sexual advances towards her.

Rohan has been arrested and booked from rape, and his mum has been sent for “medical examination”.

She is reported to be “in deep shock” and “mentally disturbed” following the alleged attack.

Coming forward to her husband, he and their eldest son convinced her to call the police.

Police inspector S M Rabari said: "Rohan has been arrested. We have also sent the accused and the woman for medical examination.”

Pictures in Indian media show the man being booked – but his identity has been protected by the authorities.

Rohan was booked for rape under Section 376 and 504 of the Indian Penal Code.

Last year, an Indian woman was raped by seven men and left to be eaten by dogs.