LOS ANGELES — Representatives for Manny Pacquiao and Floyd Mayweather Jr. have wrapped up a day of mediation with no word on any progress on the drug-testing issues endangering the boxers' prospective March 13 bout.

Pacquiao promoter Bob Arum and Mayweather's promotional team all say they've been told to make no public comments after their meeting in Santa Monica on Tuesday.

The mediation wrapped up nearly nine hours after it began in front of Daniel Weinstein, a retired federal judge.

Top Rank and Golden Boy Promotions agreed to the mediation in an effort to resolve their dispute over the methods and frequency of drug testing for the bout, which will be held at the MGM Grand Garden in Las Vegas if a compromise is reached.