Fireworks damage Amsterdam cafe frequented by Ajax fans

Supporters cheer as Ajax players show off the Dutch Eredivisie Premier League trophy after beating Emmen 4-0 at the Johan Cruyff Arena in Amsterdam (Peter Dejong/AP)

A blast believed to have been caused by powerful fireworks smashed the front window of a cafe in Amsterdam that is known as a gathering place for fans of Dutch football club Ajax.

The incident on Friday night came a day after a similar explosion damaged a bar in Rotterdam frequented by fans of rival club Feyenoord.