Four people have been arrested and an arms cache found after overnight terror raids in Brussels linked to a bikers’ club called the Kamikaze Riders, federal prosecutors said on Wednesday.

“During one of the house searches, various weapons were found. In all, four persons were arrested and taken in for questioning,” prosecutors said in a statement.

A spokesman said the raids were linked to the Kamikaze Riders, which has been implicated in terror offences. A source close to the investigation said the raids in Anderlecht district found at least two Kalashnikov assault rifles while reports spoke of explosives also being discovered.

In northern France, a joint Franco-Belgian anti-terrorist operation picked up a man on suspicion of having links to the Kamikaze Riders.