sourcePresident Barack Obama has paid tribute to his "friend and mentor", Edward Kennedy, at the senator's funeral Mass in Boston.
Mr Obama said Senator Kennedy was the "greatest legislator of our time" and a "champion for those who had none".
The body of Senator Kennedy, who died on Tuesday of brain cancer aged 77, has now been flown to Washington.
He will be buried in nearby Arlington National Cemetery near his assassinated brothers, ex-President John and Robert.
During a two-day public viewing at the John F Kennedy Presidential Library, some 50,000 people paid their respects before the Massachusetts senator's flag-draped coffin.
President Obama said in his eulogy at the Our Lady of Perpetual Help Basilica: "I knew him as a colleague, a mentor and above all as a friend."