Nearly 300 Democratic Republic of Congo police officers arrived early on Friday in Goma ahead of a scheduled rebel pullout from the key city in the mineral-rich region. The policemen were due \"to secure the city of Goma after the pullout of M23 rebels,\" Mondje Nounoubai, a spokesman for UN peacekeepers in the country, told AFP. An AFP reporter in the city saw the arrival of more than 270 policemen out of a planned 450. The M23 rebels seized Goma, the main city in the North Kivu province, last week. Their lightning advance in the resource-rich but chronically volatile region sparked international concern of a wider conflict breaking out in the area. The two wars that ravaged sub-Saharan Africa\'s largest country since the 1990s both began in the region.