NAGAKUTE, Japan, May 18 (Reuters) - Japanese police nabbed a former gangster, ending a more than 24-hour standoff after the man shot a policeman dead and wounded his own son, daughter and another police officer and then holed up in his house holding an ex-wife as hostage.

Television footage showed more than a dozen policemen with helmets and shields surrounding the former gangster on Friday evening after he came out of his house holding a plastic bag and bottle.

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