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Cairo: Unknown gunmen stormed an apartment in the Sudanese capital Khartoum and shot dead its family members, a Sudanese news website has reported.

The victims were a mother and her two children as well as a domestic helper, Al Youmaltali added.

The attackers used gun silencers after storming the apartment in a suburb in eastern Khartoum, according to the report.

The family head discovered the killings upon his return to the family’s second-floor apartment, it added. No motive was given for the murder.

There was no immediate comment from authorities.