Palestinian police and leaders of the Palestinian Authority have joined two thousand mourners at the funeral in Ramallah of a teenager shot dead during a demonstration on Sunday.

Police vehicles covered with flowers led the cortege at the funeral of Wasim Tarifi.

He was killed during a protest at the headquarters of a military intelligence unit over a raid on an office of Yasser Arafat's Fatah movement.

Security officials say the fatal shots came from the crowd.

But Fatah activists have blamed military intelligence and called on Mr Arafat to punish those responsible.

A Palestinian military court has sentenced four military intelligence officers to prison terms of between three and four years for carrying out the raid.