Israeli tanks advanced along two gateways to the center of Gaza City on Thursday while internet and phone lines were cut off for several hours, signaling a potential escalation in ground operations in the Palestinian enclave.

Israeli forces control Gaza City's eastern suburbs and in recent days have been pounding the Sheikh Radwan and Tel Al-Hawa areas, from where they would be positioned to advance on central and western areas where most of the population is sheltering.

"We are scared, but what can we do?" said Bassam Al-Qanou, a displaced man sheltering with around 30 family members in one of countless ragged improvised tent camps along the city's beach.