Stockholm - A Swedish court Friday remanded two men into custody on suspicion of involvement in a daring helicopter heist at a cash depot on the outskirts of Stockholm last month.

The two, aged 30 and 31, were arrested Wednesday. Both men have denied the allegations.

Thieves used a stolen helicopter and explosives to raid the G4S cash depot in the Stockholm suburb of Vastberga September 23, entering the building via a roof window.

Three other men have been in custody since last month including a 34-year-old man alleged to have flown the helicopter that was found abandoned in a field several hours after the raid.

G4S has offered a reward of 1 million dollars for information leading to any arrests, but has not disclosed the value of the stolen cash.

Police have said at least 10 people took part in the heist. (dpa)