Musk’s legal team filed the subpoena to Dorsey on Monday as part of an effort to establish that Twitter’s leadership had been deceptive about the number of bots on the platform, part of his defense against a suit by Twitter meant to prevent him from canceling his $44 billion purchase of the company.

The subpoena requests that Dorsey provide all communications on digital or physical platforms related to the proposed merger, the daily number of active users, and the proposed business plans concerning those estimates.

Musk also sought information on “incorporating [the daily number of active users] into executive or director compensation,” according to the filing.

Dorsey’s subpoena arrived as part of a larger number of subpoenas to several other entities regarding Twitter’s deal, including FSG Global, former Twitter employee Kayvon Beykpour, and Discord Inc.