Police pledge thorough investigation into security flaws as polls open for upper house elections amid increased police presence

Police in Japan have admitted there were “problems” with security for Shinzo Abe, as voters went to the polls for upper house elections two days after the former prime minister was assassinated on the campaign trail.

The head of police in the Nara region where Abe was killed admitted on Saturday that there were “undeniable” flaws in security for the former leader.