Dozens of people have been killed in an Israeli airstrike in the north of the Gaza Strip, Palestinian news agency WAFA has reported. The agency reported that civilians were among those in a residential complex in the city of Beit Lahia destroyed by the strike. Beit Lahia lies in the far north of the Gaza Strip close to the border with Israel. The city is located north-east of Jabalia, which is currently seeing heavy fighting between Israeli forces and Palestinian militant organization Hamas. WAFA reported that at least 73 people were killed on Saturday evening, with numerous others injured. Th…