Complex sentence: The cluster munition explosions occurred in several areas of the capital, mostly in the downtown area including the crowded outdoor marketplace and a maternity hospital near a Chechen presidential palace building (the palace itself was not hit in the attack).
Split into simpler sentences: The cluster munition explosions occurred in several areas of the capital, mostly in the downtown. Among them were the crowded outdoors marketplace and a maternity hospital near a Chechen presidential palace building (the palace itself was not hit in the attack).