A group of investors this week filed a proposed class-action lawsuit against UnitedHealth Group, alleging that the company withheld information following the murder of UnitedHealthcare CEO Brian Thompson last December.

A group of investors in UnitedHealthcare sued the company, alleging that it misled them after the assassination of its CEO, Brian Thompson. The class action lawsuit, filed in the Southern District of New York,

UnitedHealth Group is facing a class action lawsuit from investors, who allege the company misled them after the December killing of top executive Brian Thompson.