RIYADH, Dec 26: Saudi authorities, facing a wave of militant attacks, have arrested five people in raids on computer shops selling compact disks containing bomb-making instructions, a local newspaper reported on Thursday.

Police were questioning four owners of computer shops in the southern Jizan region and a fifth person believed to have supplied the CDs to the shops, Al Watan newspaper said.

Jizan province bordering Yemen is generally regarded as one of the main routes for bringing in illegal arms and explosives into the kingdom. Since signing a border agreement with Yemen earlier this year, the kingdom has seized 2,000 sticks of dynamite, hundreds of bazookas, 90,000 rounds of ammunition and 1,200 weapons. Smugglers were attempting to bring in these arms and ammunitions into the kingdom using the 1,800 kms long porous Saudi-Yemeni border.

The daily said some of the computer shop owners might not have known about the bomb-making tutorial files hidden on the CDs.

Security concerns also led the management of the ongoing Janadriyah festival in the outskirts of Riyadh cancel the visits of foreign delegations to the festival this weekend, it was reported here. The annual high profile cultural festival of the kingdom was inaugurated by Crown Prince Abdullah and is sponsored by the National Guards, headed by the Crown prince himself.