MINNEAPOLIS (AP) — Prince's personal chef says the star was battling waves of sore throats and frequent upset stomachs in his final months.

Ray Roberts, who cooked for Prince for almost three years, tells The Associated Press the musician had recently been asking for items like smoothies and freshly squeezed juices that were easier to digest. He says he felt Prince "wasn't himself" in the months before he was found dead on April 21.

A law enforcement official told the AP investigators are looking into whether Prince died from an overdose. The official has been briefed on the investigation and spoke on condition of anonymity because he was not authorized to speak to the media.

Roberts says Prince showed no signs of weakness and "not even a hint" that he was taking drugs.

Another Prince Party

Hundreds of people gathered in south Minneapolis to celebrate the life and music of Prince.

The Sabathani Community Center hosted the block party Saturday. It kicked off the second weekend in a row of tributes to Prince, who was found dead April 21 in his recording complex in suburban Minneapolis.

The Star Tribune reports singers, dancers and speakers took the stage to honor Prince. The site once housed Bryant Junior High, where Prince went to middle school.

Earlier in the week, the community center offered free daily showings of Prince's 1984 hit movie, "Purple Rain."