Israeli airstrikes killed three people in Khan Younis, where a renewed offensive has displaced 75,000 people.
In Gaza's Rafah city, also in the south, the bodies of two people were recovered by paramedics, Palestinian news agency Wafa reported.
The strikes come amid a renewed push by the US, Egypt, and Qatar for ceasefire negotiations, although Hamas has declined its attendance, arguing that the talks should be based on US President Joe Biden's 31 May proposal.
In a joint statement the leaders of the UK, Germany and France said they endorsed the renewed initiative, saying "the fighting must end now, and all hostages still detained by Hamas must be released. The people of Gaza need urgent and unfettered delivery and distribution of aid".