Unions representing former employees of the Sun-Times Media Group Inc. are seeking information from the company in a dispute over termination of health-insurance benefits.

The unions have filed a motion in Delaware bankruptcy court seeking access to documents and other information from the company, which they claim has stopped paying for insurance coverage without court approval.The company filed a notice late last year saying it planned to reject certain contracts that include severance agreements with the former employees, but the unions say the court has not yet given the Sun-Times permission to do so.

The company, whose holdings include the Chicago Sun-Times newspaper, was sold to investors led by Chicago businessman James Tyree last year for about $26.5 million.