The police in Yemen's capital Sana'a attacked a 14-year old boy with the butts of their rifles on Tuesday, the National Organization for Defending Rights and Freedoms said, adding that the boy died later from his injuries after the attack.

Quoting eyewitnesses, HOOD said the boy, Mohib Al-Ya'ari, fought another boy in the Moroor area and then the father of the second boy reported the conflict to the police, who dispatched policemen to Al-Ya'ari's home to attack him.

In a statement, HOOD also quoted the eyewitnesses as saying the police called Mahib Al-Ya'ari to come out from his home and then beat him severely in front of his father.

The policemen said to the eyewitnesses that their action came amid state of emergency and that they will not be investigated if they kill anyone, said HOOD.

After the incident, the people in the area closed Taiz Street, demanding a probe into the killing, the eyewitnesses were quoted as saying.

HOOD also threatened to report the incident through its partners at the Karama Organization in Geneva to the UN Special Rapporteur on extrajudicial killings.

The state of emergency in the country was unconstitutionally declared, passed by the House of Representatives and enforced amid the escalating protests demanding the ouster of the regime, it said, warning of exploiting this to allow the security forces to commit unofficial crimes.