Israeli strikes have killed at least 73 people, including women and children, in the city of Beit Lahia in northern Gaza, the strip's Hamas-run authorities have said. Dozens of others are injured and many are still trapped under the rubble after the bombing late on Saturday night, officials added. Israel said it was checking reports of casualties but said the figures published by Hamas authorities were "exaggerated" and did not match information held by its military. Fighting also continues to be reported in southern Lebanon as well as the south of Beirut on Sunday morning, where smoke was seen rising above the city. Israel said its air force had attacked "about 175 terrorist targets" in Gaza and Lebanon over the past day.