The Israeli Army announced the expansion of its ground operation in Gaza Strip on Monday, adding that they "eliminated dozens" of Hamas fighters during night strikes.
It said IDF targeted Hamas fighters stationed near Al-Azhar University.
The IDF said "about 600 targets were struck, including weapons warehouses, hiding and gathering places belonging to Hamas elements, and anti-tank missile launch sites" over the "last 24 hours".
Earlier, an officer of the Israeli force died and two more were injured when a tanker flipped over in an accident in the north.
During a press conference on Sunday, Israeli army spokesman Daniel Hagari confirmed that the number of hostages in Gaza is 239, adding that they are "committed to working to releasing them".
He also called on residents of Gaza to evacuate the northern Strip.

Gaza talks at critical moment, ceasefire not complete, Qatar's PM says
India caps airline fares as IndiGo crisis leaves hundreds stranded for fifth day
Russian drones, missiles hit railway hub near Ukraine's capital
Putin and Modi discuss trade, peace in New Delhi summit
Indian air travel crippled as IndiGo's pilot crisis enters fourth day
