Israel sent positive signals to mediator Egypt over a potential renewed ceasefire agreement with Hamas in Gaza, security sources said on Thursday, after Israel renewed its offensive in the enclave at the fallout of the original truce on March 18.

Egypt, one of the mediators in the Gaza ceasefire negotiations, has received positive indications from Israel over a new ceasefire proposal that would include a transitional phase, security sources told Reuters on Thursday.

The proposal suggests Hamas release five Israeli hostages each week, sources said.

A security delegation from Egypt has left for Qatar for talks, which will include increasing aid to the enclave and releasing remaining hostages, state-affiliated Al Qahera News TV said on Thursday.

Violence has escalated in Gaza since a January truce broke down on March 18 after two months of relative calm.

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Asked about the latest proposal, a Palestinian official close to the mediation efforts said "there are some offers that look better than the previous ones".