Fighting between the Congolese Army and the rebel group M23 was again centered near Mutaho, 12 kilometers (7 miles) north of the city of Goma, Voice of America reported.
Government spokesman Lambert Mende said 15 rebels and four army soldiers were killed in the fighting.
Speaking in Mozambique, Ban said he will travel to Goma Thursday, and called for faster deployment of a U.N. "intervention brigade" to subdue rebels in eastern Congo.
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