The Sudanese government says it believes Israel was responsible for explosions at a military factory in the capital Khartoum on Tuesday.Culture and Information Minister Ahmed Bilal Osman said four Israeli planes attacked the factory and two people were killed. Israel has not commented.
Sudan has blamed Israel for such attacks in the past.
Correspondents say Israel believes weapons are being smuggled through the region to Gaza.
Leaked US State Department documents three years ago suggested that Sudan was secretly supplying Iranian arms to Hamas in the Gaza Strip.
In April 2011, Khartoum held Israel responsible for an air strike that killed two people in a car near the city of Port Sudan. A similar incident happened in May 2012. Israel was also blamed for a strike on a convoy in north-eastern Sudan in 2009. In all those cases it neither confirmed nor denied involvement.In the latest incident fire engulfed the Yarmouk plant and nearby buildings after the explosions, with flames visible over a wide area.
Residents reported seeing aircraft or missiles overhead before a number of explosions.