A Polish supermarket in Beverwijk has been targeted in a suspected bomb attack for the third time in six months.

Police arrested a suspect after they were called out to the store at around 1am on Monday. A spokesman said items were found that could have been used to cause an explosion.

The Bierdronka store in the Beverhof shopping centre was hit by two bomb blasts in December last year during a campaign of attacks on Polish-themed grocery stores. Premises in Aalsmeer, Tilburg and Den Bosch were also targeted, while a store in Rotterdam twice came under gunfire in March.

Police believe the explosions are connected. In January a 19-year-old man from Rotterdam was arrested before being released, but he remains a suspect.

Four other men from Amsterdam, aged between 20 and 26, were arrested in May, three of whom are still in custody.