On Saturday, only hours before the afternoon ceremony was to take place at the Southampton, N.Y., estate of music mogul L.A. Reid, Usher's publicist Patti Webster issued the following statement: "It was announced today that the wedding ceremony for Usher Raymond IV and Tameka Foster was canceled. No additional information will be given regarding the circumstances of the cancellation, but we hope the privacy of this matter will be respected." Webster would not comment on whether Usher and Foster were still engaged or even remained a couple.

According to the New York Post, the 70 to 100 guests who needed to be informed there was to be no wedding included couples Beyoncé and Jay Z, as well as Janet Jackson and Jermaine Dupri.

A source tells PEOPLE "Usher's mother [and former manager, Jonetta Patton, whom he fired in May] is against the wedding. That is one of the main obstacles." Another pressing matter was that the two "had a lot of differences about the details. For example, the bride wanted barbeque, [and] he wanted to have [renowned chef] Jean Georges cook," said the source.