Nairobi police punish gang rape men by making them mow their station lawn The 16-year-old schoolgirl was allegedly raped by a gang of six men She was punched, kicked and thrown down a pit latrine after the attack The girl had been walking home from her grandfather's funeral at the time Three of her attackers were caught by a vigilante mob and handed to police The men were seen the following morning cutting grass with long knives According to activists, they were later released from custody Protest: Demonstrators will march on the Kenyan police headquarters in Nairobi, pictured, in protest at the lenient treatment handed out to the teenager's alleged rapists Human rights activists are demanding justice for a Kenyan schoolgirl who was gang raped and thrown down a pit after police made her alleged attackers mow the lawn at the station as a punishment. More than 1.2million people have signed a petition amid mounting outrage following the rape of the 16-year-old, which left her with a broken spine and horrific internal injuries. The girl was walking home from the funeral of her grandfather when she was attacked by a gang of six men four months ago. She was punched, kicked and raped by the gang who then threw her down a pit latrine, breaking her back. The teenager, known only as Liz, was found by locals when they heard her screams after she regained consciousness and managed to crawl her way out of the pit. Although vigilantes found three of the attackers and handed them into police, the men were reportedly seen cutting the grass at the Tingolo police compound with long knives the following morning. They were then released say activists. 'Liz' is still in a wheelchair, but doctors say she is expected to make a full recovery. Human rights groups are now planning to march to a police station in the capital Nairobi in protest at the apparent inaction of police. Saida Ali, from the Coalition on Violence Against Women, a group helping the victim with her recovery, told The Times: 'The police need to give a public apology to all Kenyan women, because if that can happen to one woman, it can happen to everyone.' The petition was launched by women's rights group Femnet. Nebila Abdulmelik, from the group, told The Times: 'If a bank is robbed, the response time is three minutes. 'In this case a girl was raped and left for dead and there's no tangible action.' The group has not only called for her alleged attackers to face justice in the Kenyan courts, but for the police officers who handled the case to face disciplinary action. Police say that they are still investigating the case, but that the alleged perpetrators have disappeared.