ZAGREB (AFP) - Croatia's former prime minister Ivo Sanader was behind bars in a Zagreb prison on Tuesday under investigation for alleged abuse of power and corruption after being extradited from Austria late Monday. His return comes at a sensitive time for the ruling HDZ party already lagging in the polls just months ahead of general elections. "Eye to Eye, finally" read the influential Jutarnji List daily frontpage headline showing pictures of Sanader and state attorney general Mladen Bajic. "Ivo has finally returned home," the Vecernji List daily said.