Former US president is reviewing treatment options with family as cancer has spread to the bone

Joe Biden has been diagnosed with prostate cancer, which has spread to the bone, and the former president and his family are reviewing treatment options, his office said in a statement on Sunday.

Biden, 82, beat an incumbent Donald Trump in the 2020 presidential election and initially sought a rematch with him last year. But, amid questions about his age and mental acuity, he dropped out of the race and endorsed his vice-president, Kamala Harris, to succeed him.