The funeral service is under way of US Senator Edward Kennedy, who died on Tuesday, aged 77. California Governor Arnold Schwarzenegger was among politicians, family and friends at a Mass at Boston's Our Lady of Perpetual Help Basilica.
Earlier, US Vice-President Joe Biden addressed a memorial service for Senator Kennedy at the John F Kennedy Presidential Library.
Ceremonies to commemorate Senator Kennedy began earlier in the week with a private family Mass in Massachusetts.
A large group of Senator Kennedy's relatives looked on as his coffin was carried out of the family compound in Hyannis Port.
Crowds lined the streets as the hearse carrying Mr Kennedy's casket drove past Boston sites considered important in the senator's life.
Some cried, some applauded as the hearse wound its way towards the John F Kennedy Presidential Library and museum.
After the funeral service in Boston, Mr Kennedy's body will be taken to Arlington National Cemetery for burial next to his brothers John F Kennedy and Robert F Kennedy, both assassinated in the 1960s.
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