Rep. John Lewis of Georgia was released from the hospital Sunday, his office told the New York Daily News.
"All tests have been completed, and doctors have given him a clean bill of health," his spokeswoman said. "He thanks everyone who shared their thoughts, prayers and concerns during his stay."
The 78-year-old Democrat and civil rights icon was hospitalized Saturday after suffering a medical emergency aboard a flight to Atlanta, according to the Atlanta Journal-Constitution.
Lewis reported feeling "dizzy and sweaty" and was hospitalized for "routine observation" at a local hospital, his office told the newspaper.
Lewis is best known for his role in the civil rights movement, including marching with the Rev. Martin Luther King in Selma, Ala., in 1965, as well as the 1961 Freedom Rides and the 1963 March on Washington.
Last month, Lewis joined thousands of people in Atlanta during the nationwide March For Our Lives against gun violence.
Lewis has represented the 5th Congressional District in Georgia since 1987.
