The grief-stricken royal family laid Princess Caroline's husband, Stefano Casiraghi, to rest Saturday in a plot overlooking the stretch of blue Mediterranean where he was killed in a boat-racing accident.

The private burial at the tiny Chapel of the Peace followed a public funeral at Monaco's nearby cathedral. Thousands of people, including tourists in bright beach outfits and citizens in black mourning garb, crowded around the 115-year-old cathedral during the tearful ceremony.The tiny, wealthy Riviera principality appeared sad but not stricken by the same shock that accompanied the death of Caroline's mother, Princess Grace, in a car accident in 1982.

Gambling continued at the famed casinos without interruption. Small businesses closed during the funeral but quickly reopened for the afternoon.

Casiraghi, 30, an Italian businessman, died instantly Wednesday when his boat flipped during the World Offshore Championships. The somersault slammed him headfirst into the water. The other driver, Patrice Innocenti, was injured.

"The brutality of his death adds to our pain," Archbishop of Monaco Joseph Sardou said at the service. "The sea, so calm today, holds dangers that must constantly be confronted."

Princess Caroline, 33, wept occasionally during the 55-minute service as sunlight streamed through stained-glass windows and a Bach dirge wafted from the organ.

The princess wore dark sunglasses, a black lace head-covering and black dress. The three children from her seven-year marriage to Casiraghi were not present.

Referring to Caroline, Sardou said: "It was through his union with you, Madame, that he found the greatest expression of his Christian faith."

Caroline occasionally leaned on her father, Prince Rainier, for support. Prince Albert, heir to the realm, comforted younger sister Princess Stephanie when she briefly fled the cathedral weeping.