The special master in the opioid multidistrict litigation is under pressure to disqualify himself after he hit “reply all” on an email that was meant for himself but, instead, went to lawyers in dozens of cases.

David Cohen, who has served as special master since 2018, intended to forward an Aug. 28 email with notes to himself on the bellwether trial process in the opioid cases against pharmacy benefit managers. But, according to an affidavit, he accidentally replied to all the lawyers in the cases.