The wife and child of Hamas militant Mohammed Deif, the chief of its armed wing, were reportedly killed in the Israeli air strikes on Gaza.
Israel said about 50 rockets had been fired from Gaza on yesterday and another 20 today, although no injuries have been reported.
The hostilities resumed hours before a temporary ceasefire was due to expire.
It was not known whether Deif had survived last night's attack, although Hamas' exiled deputy leader Mussa Abu Marzuk was quoted as saying in Cairo that two of the victims were his wife and daughter, the BBC reported.
Deif, accused of ordering suicide bomb attacks in Israel several years ago, has survived a number of assassination attempts, which reportedly left him with severe disabilities.
Israeli Interior Minister Gideon Saar told army radio that he was a "legitimate target" and that if an opportunity arose to eliminate him, it should be taken.
Israel's security cabinet was due to discuss the renewed violence later today.
This morning, eight people - all believed to be from the same family - were also killed in an Israeli strike in central Gaza, Palestinian medics said.
In all, about 100 people have been wounded since the ceasefire ended, Palestinian officials say.
In Israel, sirens sounded in a number of cities, including Tel Aviv and Jerusalem.
The Israeli military said it had shot down a number of missiles fired from Gaza.
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
