Dozens of people have been killed in Israeli airstrikes in northern Gaza, according to emergency rescue workers. Palestinian Civil Defense in Gaza said it believed that more than 75 people had been killed in strikes in Beit Lahia, a farming town north of Gaza City. Rescue workers have been unable to operate in northern Gaza since an Israeli offensive began almost two months ago. The Israeli military dismissed reports of airstrikes in Beit Lahia as 'false Hamas propaganda' on Saturday, but said it was continuing its 'counterterrorism activity against Hamas in the Gaza Strip.'