'Gaza has been under sustained bombardment for two days
Israeli forces have kept up attacks on the Gaza Strip, where they have killed at least 32 Palestinians, militants and civilians, since Wednesday morning. Four Palestinian boys were killed in an Israeli attack as they played in a field in northern Gaza on Thursday.
The Israelis say their attacks are a response to the firing of Palestinian rockets into southern Israel.
A BBC correspondent says Gazan drivers are staying at home, worried their vehicles could be hit from the air.'
