Hard-to-detect Bombs

A master Al-Qaeda bomb maker who hid out for years in Yemen while developing hard-to-detect explosives is believed to have been killed last year, a US official told AFP on Tuesday.

France on Friday boosted passenger screening at its airports, responding to a Washington request for extra security for US-bound flights over fears Islamist radicals could be plotting new attacks using hard-to-detect bombs.

Terrorists may have used hard-to-detect plastic-based explosive PETN in Wednesday's Delhi High Court blast - the same substance used in the underwear bomb plot on a 2009 Northwest Airlines Flight 253 and by the 'shoe bomber'.

A master Al-Qaeda bomb maker who hid out for years in Yemen while developing hard-to-detect explosives is believed to have been killed last year, a US official told AFP on Tuesday.

France on Friday boosted passenger screening at its airports, responding to a Washington request for extra security for US-bound flights over fears Islamist radicals could be plotting new attacks using hard-to-detect bombs.

Terrorists may have used hard-to-detect plastic-based explosive PETN in Wednesday's Delhi High Court blast - the same substance used in the underwear bomb plot on a 2009 Northwest Airlines Flight 253 and by the 'shoe bomber'.