KINSHASA (Reuters) - A Belgian woman was seriously wounded in the Democratic Congo capital Kinshasa on Tuesday when the city came under renewed shellfire from neighbouring Brazzaville. Four shells exploded in the central administrative and diplomatic area of Kinshasa in the latest spillover from a four-month power struggle in Brazzaville which has so far killed 23 people in the capital of the former Zaire. The top commander of former Congo Brazzaville military leader Denis Sassou Nguesso`s forces accused President Pascal Lissouba`s forces of targeting Kinshasa. General Jean-Marie Tassoua, Sassou`s war commander, told Reuters that the four shells fired across the Congo River had come from Lissouba`s area of Brazzaville. "Our artillery cannons have not fired a single shell this morning," he said. Lissouba, whose showdown with Sassou has killed several thousand people in Brazzaville itself, has repeatedly accused his rival`s forces of targeting Kinshasa. Democratic Congo`s president, Laurent Kabila, has sent several hundred soldiers to Brazzaville under an agreement with Lissouba to seek and destroy the cannon firing at Kinshasa. His forces have also retaliated with cross-river artillery fire of their own in the past.