NEW : Fears voiced by UNICEF for children trapped in the escalating fighting . Upsurge in hostilities follows cessation for New Year . A TamilNet correspondent in Vanni reported heavy shelling , rocket fire and gunfire . U.N. humanitarian chief : Large number of people crowded in very small area . Comment:
NEW : Fears voiced by UNICEF for children trapped in the escalating fighting . Upsurge in hostilities follows cessation for New Year . U.N. humanitarian chief : Large number of people crowded in very small area . Comment: