[Top photo: The septuagenarian giving her statement to the police after she was said to have been raped by her ex-lover.].

A 72-year-old grandmother is alleged to have been raped by the live-in boyfriend she separated from six months ago.

The woman was even dragged on the staircase from a unit on the ninth floor to the first floor atrium of an apartment in Taiwan.

She suffered injuries over their bodies and face.

According to Apple Daily, the septuagenarian and the 45-year-old odd-job worker fell in love after meeting each other at a friend's gambling party four years ago.

Two years later, he moved into her apartment but the relationship did not last long.

About six months ago, the woman wanted a separation after numerous heated arguments with the lover as he suspected that she was seeing another man.

After they separated, the man had in many occasions pleaded for her forgiveness but never succeeded.

The woman, who could not stand his constant "harassment" moved to her daughter's home.

On Wednesday evening, he stormed into the daughter's apartment unit but was chased away by the ex-girlfriend, reported TVBS, a Taiwan television station.

The furious man then forced her onto the floor and raped her.

After that, he dragged her down the stairs to the atrium by grabbing her shirt collar.

Neighbours who heard her shouts for help, called the police.

The man was arrested and remained in police custody after he failed to pay the NT$30,000 (S$1,320) bail.