(Bloomberg) — Elon Musk, who secretly acquired a major stake in Twitter Inc. in early 2022 before eventually buying it, did so with the help of a Morgan Stanley wealth manager who advised the billionaire on how to avoid alerting the broader market, according to a shareholder lawsuit.

The unidentified employee offered Musk and his business manager, Jared Birchall, regular updates on “trading strategies to avoid public detection” and “‘money saved’ by hiding these trades from the market,” according to an amended version of the 2022 suit filed Tuesday in Manhattan federal court.