Updated: 5:03 p.m.

Sen. Edward Kennedy’s (D-Mass.) family announced Wednesday that the late Senator will be buried in a private ceremony at Arlington National Cemetery on Saturday evening alongside his brothers, former President John F. Kennedy and former Attorney General Robert Kennedy.

The 5 p.m. Arlington service will follow a closed funeral Mass for Kennedy earlier in the day at Our Lady of Perpetual Help Basilica in Boston.

Kennedy’s body is expected to be laid in repose from 10 a.m. to 4 p.m. Friday at the John F. Kennedy Presidential Library in Boston for a public viewing. A private memorial service will be held at the library from 7 p.m. to 9 p.m.

Kennedy died Tuesday night after a more-than-yearlong battle with brain cancer. First elected to the Senate in 1962, Kennedy was 77.

Meanwhile, Kennedy’s office is asking the public to, in lieu of flowers, donate money to the Edward M. Kennedy Institute for the United States Senate, a new project of the University of Massachusetts that will be located next to the John F. Kennedy Library.

The institute, which was formed last year, will host training sessions for incoming Senators, “mock sessions— of the Senate for students and other educational activities. It will also serve as a museum on the Senate.

The nonprofit organization was founded by a group of friends and colleagues of Kennedy.

The Edward M. Kennedy institute has already become a magnet for funds from the health care industry. According to a January report by the Boston Globe, the institute had taken in more than $20 million in donations from executives and others in the pharmaceutical, hospital and insurance sectors.

Kennedy’s office also announced that “tribute areas— are being erected at the John F. Kennedy Library in Boston, the JFK Museum in Hyannis, Mass., and at Kennedy’s office in the Russell Senate Office Building. President Barack Obama on Wednesday ordered all flags to be flown at half-staff until Sunday.

In Washington, the liberal group MoveOn.org was helping organize a vigil in Dupont Circle to honor Kennedy. The organization was encouraging the public to meet at 7:45 p.m. for a candlelight vigil to pay tribute to the late Senator.