NEW : At least 50 students killed , 100 injured Fifty to 60 patients , 30 of them severely injured , were taken to Trinite Hospital in Port-au-Prince , said Isabelle Mouniaman Nara , the head of mission in the capital for Medecins sans Frontieres . ; toll is expected to rise . Red Cross official says dozens of students seem to be trapped in Haiti school . Rescue workers digging through rubble near Port - au - Prince , official says . School could have as many as 700 people in it , rescue official says .
NEW : At least 50 students killed , 100 injured ; toll is expected to rise . Red Cross official says dozens of students seem to be trapped in Haiti school . Rescue workers digging through rubble near Port - au - Prince , official says . School could have as many as 700 people in it , rescue official says .