The elder statesman, who has towered over Israeli politics for decades, was hospitalised near Tel Aviv "after experiencing chest pains," the spokesman said in a statement.
"He underwent a cardiac catheterisation during which a narrowed artery was diagnosed which was then widened during the procedure. Former president Peres is feeling well and is fully conscious, his condition is stable."
Peres, a co-architect of the Oslo peace accords in 1993, was named joint Nobel Peace Prize laureate in 1994 with Israeli premier Yitzhak Rabin, who was assassinated the following year, and then-Palestinian president Yasser Arafat.