US POLICE and the FBI are scouring the country for a man accused of murdering five women in southern Louisiana after a DNA dragnet linked him to one of the slayings.

INVESTIGATORS are becoming increasingly convinced Washington sniper John Allen Muhammad went on his rampage because he planned to murder his former wife in what would appear to be a random killing.

US authorities in Louisiana have charged the two Washington sniper suspects with another murder.

Police have issued new murder warrants for the suspected Washington serial snipers after they were linked to an earlier killing in Louisiana.