A dispute over the Woodstock 50 festival has intensified into a court fight, with organizers accusing a former investor of sabotaging the anniversary event.

Organizers Woodstock 50 LLC sued Dentsu Aegis Network on Thursday.

A request for comment was sent to London-based Dentsu Aegis. A court hearing is set for Monday.

Dentsu said April 29 it was canceling the festival out of concern about its execution and artists' and attendees' "health and safety."

Woodstock 50 LLC says Dentsu can't unilaterally cancel the show and it'll go on Aug. 16-18 in Watkins Glen, New York, despite the rocky lead-up lately.

Planned headliners include Jay-Z, Dead & Company and the Killers.

Organizers also accuse Dentsu of snatching $18 million from festival accounts. Dentsu has said it just "recovered" cash it put in.

(Copyright 2019 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.)