Doctors Without Borders (MSF) says that another of its staff members has been killed in Gaza, in an Israeli air strike alongside his family members, Al Jazeera reports.

MSF said it was “appalled and saddened by the killing of our colleague Hussam Al Loulou by an airstrike on the morning of 1 April”.

“Our colleague Hussam was killed along with hundreds of others across the Gaza Strip since the resumption of attacks by Israeli forces on 18 March,” the medical charity said.

The 58-year-old watchman at MSF’s urgent care unit in Khan Younis was killed along with his wife and 28-year-old daughter in the “horrendous attack” southwest of Deir el-Balah in central Gaza, MSF said.

Al Loulou is the 11th MSF worker killed in Gaza since the start of the bombardment in the enclave.

The organisation hailed Al Loulou for his “selflessness, humility and genuine care for those around him”, adding that he was survived by two sons.

“We strongly condemn his killing and call yet again for the immediate restoration of the ceasefire and protection of civilians,” MSF said.

“This bloodshed needs to end.”