London, September 15 : A British security expert has revealed that he has broken safes for Al-Q''aeda head Osama bin Laden and Ugandan dictator Idi Amin, whom he describes as "friendly" and “fun” respectively.

Arthur Riding, 59, said that he met Laden dozens of times while working in the Middle East.

He said that he had installed bulletproof glass at Laden''s home in Saudi Arabia.

He even revealed that he once opened a safe for the terror chief.

"You could talk to him and he was reasonably friendly. There was no clue that he would go on to do what he has done," the Telegraph quoted the father-of-one from Birmingham as saying.

Kabul - A United Nations convoy was attacked by a suicide bomber in southern Afghanistan, close to the Pakistani border, killing two Afghan employees and wounding more than a dozen people, a police official said Sunday.

The bomber drove an explosive-filled vehicle into the UN convoy in Spin Boldak district of southern Kandahar province on Sunday morning, provincial police chief Matiullah Khan said.

Kabul - A United Nations convoy was attacked by a suicide bomber in southern Afghanistan, close to the Pakistani border, killing two Afghan employees and wounding more than a dozen people, a police official said Sunday.

The bomber drove an explosive-filled vehicle into the UN convoy in Spin Boldak district of southern Kandahar province on Sunday morning, provincial police chief Matiullah Khan said.

He said two Afghan doctors riding in the convoy were killed, and three other officials and at least 12 civilian passersby were injured in the attack which took place in the main market area.

Kabul - A United Nations convoy was attacked by a suicide bomber in southern Afghanistan, close to the Pakistani border, killing two Afghan employees and wounding more than a dozen people, a polic

Washington - At least four people died and 23 others were injured Friday in a train accident near Los Angeles, local television channel KTLA reported.

Several of the injured were in serious condition and the authorities feared that the number of dead might increase, the report said citing rescue teams.

A commuter train and a freight train crashed at 4:23 pm (2323 GMT) near Chatsworth, in the San Fernando Valley north of Los Angeles. The commuter train was busy at the time, with an estimated 400 passengers.

New York - UN Secretary General Ban Ki-moon rode a Swiss-made, fully solar-powered vehicle to work at UN headquarters on Friday as part of his efforts to raise awareness of dangers of climate change.

He has already raised the thermostat by 3 degrees Celsius at UN headquarters during the summer to set an example of UN responsibility to save the climate by lowering emissions of carbon dioxide from the old UN structure built in the early 1950s.

Ban rode the so-called "Solartaxi" from his residence just a few blocks from his office on the 38th floor at the UN.