The sources said that missiles were fired targeting a group of resistance fighters east of the refugee camp, killing two and wounding several Palestinians.
Israeli drones can still be heard flying over the area, and over different parts of the besieged coastal region.
Spokesperson of the Ministry of Health in Gaza, Dr. Ashraf al-Qodra, stated that the slain Palestinians have been identified as Mazin Faraj al-Jarba, 30, and Marwan Hasan Salim, 23. At least one Palestinian suffered a moderate injury.
Also on Sunday evening, the Salah Ed-Deen Brigades, the armed wing of the Popular Resistance Committees, stated that a group of its fighters survived an assassination attempt in Beit Hanoun, in the northern part of the Gaza Strip.
The Brigades added that the fighters managed to fire two missiles into an adjacent Israeli area.
Israeli drones also fired missiles into a Palestinian land in Beit Lahia, in the northern part of the Gaza Strip.
The army also fired artillery shells into southern Gaza, including three shells fired into the eastern boundaries of Rafah city.