The suspect in a deadly Texas mass shooting was a Tesla Inc. employee with “known aggressive tendencies” who had assaulted a coworker in December during a company-sanctioned prayer break, according to a lawsuit.

Lillian Mendoza Brady is seeking more than $1 million from Tesla for its failure to ensure safety in the workplace and its negligent supervision of Ndiaga Diagne in the lawsuit filed Thursday in Texas District Court. Her attorney, Robert Hilliard of Hilliard Law, identified Diagne was the same person police say killed three people and injured 19 others in downtown Austin on March 1.

Diagne was praying …