New York, Aug 13 : Spainish authorities have reportedly released a video that shows Al Qaeda terrorists training for a bombing attack using a model plane and explosives.

The video released by the country's Interior Ministry showed a colorful model propeller plane taking off.

Once it takes flight, the plane drops a small object that falls to the ground like a bomb.

Then the video shows a man running to where the object landed, the New York Daily News reports.

According to the paper, Spanish authorities took three people into custody on suspicions that they were planning a terrorist attack in Spain or elsewhere in Europe.

Two of the alleged terrorists who were arrested are Russians of Chechen descent, while the third alleged terrorist is a Turkish man.

The ministry also released photographs of an underground space at Yalcin's home where around 150 grams of an allegedly explosive substance was discovered, the report said. (ANI)