The Sudanese government denied claims that it is arming rebel groups that target oil production in neighbouring South Sudan.
Sudanese Foreign Ministry spokesperson Ali Al Sadiq told the country’s official SUNA news agency that Sudan has "no interest in such an intervention” into the nation’s conflict as instability would only cause refugee migrations to the north.
Political tension turned into violence when the incumbent president Salva Kiir Mayardit accused the ousted former Vice President Riek Machar of plotting a coup against himself.
Some global aid agencies, such as Doctors without Borders and the International Committee of the Red Cross, have evacuated their staff from South Sudan, for fear of tense clashes.
South Sudan's President Mayardit and his rival Machar signed a ceasefire deal in January this year, but the violence has continued in some parts of the country.
According to UN estimates, 10,000 people have been killed and another 1.5 million are believed to be displaced since the conflicts began in South Sudan.