Russian President Vladimir Putin Saturday ordered the prosecutor general to make a thorough probe into the Beslan school siege which killed 331 a year ago.

Addressing a regular meeting of the Russian Security Council, Putin said "I assigned the Prosecutor-General to send to Beslan workers of the central Prosecutor-General's Office. They are to conduct an additional comprehensive analysis of all the information existing on this case."

Putin gave the instruction following the Friday meeting here with representatives of angry Beslan mothers, who lost their children and relatives in the terrorist act and complained insufficient government investigations into the case.

Putin said, "They are worried by the fact that no objective information has come out so far about the investigation of the actof terrorism. "

"I think it is absolutely correct that an impartial and all-round investigation of such cases should promote a radical improvement of the whole law enforcement sphere," he added.

The Security Council meeting began with a minute's silence tribute to the memory of all victims of the Beslan siege.

On Sept. 1, 2004, a crowd of armed militants took about 1,200 people hostage in a secondary school in Beslan, a town in southern Russia.

The crisis ended on the third day after a fierce exchange of gunfire between hostage-takers and government troops. It left at least 331 people dead, 189 of them children, and more than 950 injured.

Source: Xinhua