KABUL  - Afghan intelligence forces said Thursday they had foiled a large attack in Kabul, arresting a Pakistani suicide bomber driving a truck packed with 1,000 kilograms of explosives.

The man was arrested early Thursday on a major road in Kabul's Pul-e-Charkhi district east of the city - the same area hit on Wednesday in an attack on a guesthouse complex used by foreigners, a spokesman said.

"If this amount could have been used, it would have caused a huge, deadly disaster," Afghan intelligence agency spokesman Lutfullah Mashal told AFP.

"The arrested Pakistani suicide bomber was in his 20s and from tribal parts of Pakistan," said Mashal. The arrest came on the day designated by Taliban insurgents as the start of their spring offensive and a day after a suicide car bomb on the same road killed at least seven people just hours after US President Barack Obama left the city.