The Los Angeles City Council has unanimously approved a measure urging the Olympics committee to investigate LA 2028 chief Casey Wasserman over ties to paedophile Jeffrey Epstein.

Wasserman is facing mounting calls to leave the post after disclosures surfaced showing that he flew on Epstein's jet and exchanged flirtatious emails with the late financier's jailed associate, Ghislaine Maxwell, in 2003.

The resolution, while not enforceable and largely symbolic, displays the simmering discomfort in the Summer Games' next host city over Wasserman.

The sports and entertainment executive has not been accused of any wrongdoing, and has expressed regret for the exchanges, which are from decades ago.

The city council's resolution, adopted in a 12-0 vote, expresses "concern regarding the potential conflict between the Olympic movement's values and Casey Wasserman's association with the Epstein files".