Israeli troops and armoured vehicles have invaded a Gaza Strip refugee camp in an apparent resumption of what the army says is an open-ended operation to uncover arms-smuggling tunnels.
Palestinian witnesses said at least 40 tanks and armoured personnel carriers entered Rafah refugee camp on Gaza's southern border with Egypt, from its Salaam and Uraiba districts, encountering little resistance.
Israeli forces took control of large areas of the camp last Thursday and left three days later, having killed eight Palestinians in clashes and left more than 1,000 homeless after demolishing buildings to uncover tunnels.
Rafah sees intensive arms smuggling by Palestinians waging a more than three-year-old uprising for independence. Gaza was captured by Israel along with the West Bank in the 1967 Middle East war.
Israeli officials last week accused Rafah militants of trying to acquire shoulder-launched missiles that could end up in the West Bank and threaten civilian aircraft.
But while the army said it discovered and destroyed three tunnels from nearby Egypt in the first raid, no such weapons were found.