NEW : Tawergha forces reportedly using a previously unseen type of mortar . 32 are killed and Seven wounded in Tunisia , a physician says . There are reports of two former Libyan officials crossing into Misrata . Fighting is keeping medical personnel away from the wounded , aid groups say .
NEW : Gadhafi forces reportedly using a previously unseen type of mortar . Seven are killed and 32 wounded in Misrata , a physician says . There are reports of two former Libyan officials crossing into Tunisia . Fighting is keeping medical personnel away from the wounded , aid groups say .