THE HAGUE, Netherlands (AP) — A Dutch judge has extended by two weeks the detention of a suspect arrested last week for alleged involvement in a threat that forced the cancellation of a concert in Rotterdam by an American rock group.

Rotterdam District Court tweeted Wednesday that an investigative judge granted prosecutors' request to continue holding the 22-year-old suspect for a further 14 days.

The suspect, whose identity has not been released, was arrested in the town of Zevenbergen, 45 kilometers (28 miles) south of Rotterdam, hours after the concert by Los Angeles band Allah-Las was cancelled. The cancellation followed a tip about a possible terror threat that was sent to Rotterdam police by authorities in Spain.

Police have not released details about the exact nature of the threat.