Following a report late last month that creditors of bankrupt sapphire supplier GT Advanced Technologies won a court order to get a look at sensitive Apple documents, now GT’s creditors are requesting a deposition of Apple executive Jeff Williams. The Wall Street Journal reports:

In a Monday filing with U.S. Bankruptcy Court in New Hampshire, GT’s official committee of unsecured creditors and a group of bondholders said Apple Senior Vice President of Operations Jeff Williams should be made available for a “short, half-day deposition.”

Williams is Apple’s Senior Vice President of Operations and according to Apple’s bio page “leads a team of people around the world responsible for end-to-end supply chain management”. In their filing requesting the deposition, GTAT’s creditors said “it is clear that Williams played an important, substantial and hands-on role in managing the relationship between GTAT and Apple in connection with the matters that are directly relevant to the Apple settlement motion.”

The request comes as part of GTAT creditors’ probe of what it called an unfair settlement reached between the bankrupt sapphire supplier and Apple that would see GT repay Apple $439 million.

Throughout the bankruptcy case, Apple has said it would maintain its commitment to Mesa, Arizona and work to repurpose the facility it had invested in alongside GT Advanced for sapphire production. Mesa officials indicated in recent interviews that Apple is focused “on preserving jobs in Arizona.”