New York - The United Nations refugee agency today voiced its grave concern over the escalating violence and worsening displacement crisis in the Somali capital, where local hospitals report that over 250 civilians have been killed and nearly 1,000 others wounded since fighting erupted last month. Continued fighting, which broke out on May 7 in several parts of north-west Mogadishu between Government forces and the opposition Al-Shabaab and Hisb-ul-Islam, "is leaving a trail of civilian casualties, destruction and renewed displacement," William Spindler, spokesperson for the UN High Commissioner for Refugees (UNHCR), told reporters in Geneva. Since violence broke out last month, the agency estimates that over 160,000 people have been driven to other parts of Somalia or to neighboring nations, with some 26,000 uprooted between June 19 and 22 alone. Most of the internally displaced persons (IDPs), numbering nearly 50,000, have moved to safer areas within Mogadishu or to makeshift camps on the capital's outskirts. A further 45,000 people have fled towards the so-called Afgooye corridor 30 kilometers south-east of Mogadishu, joining 400,000 other IDPs who have been displaced since 2007. Some of the newly displaced are families who had recently returned to the capital after a period of relative peace in the first quarter of this year, Mr. Spindler said.