Israel, which has so far violated the Gaza ceasefire accord 47 times, bombed Rafah on Sunday, raising fears that it might have led to casualties, reported 24NewsHD TV channel.
Earlier, 11 Palestinians embraced martyrdom when an Israeli tank targeted a bus in northern Gaza.
On the other hand, Hamas on Sunday strongly rejected the accusation made by the United States that it was planning to target civilians.
Hamas said it did not violate the ceasefire accord.