Four Coptic Christians have been shot dead in broad daylight at a jewellery shop in a busy district of the Egyptian capital, Cairo.
Details remain sketchy, but witness accounts speak of two men, wearing wigs and sunglasses, entering the shop and opening fire with automatic weapons.
...There are fears the attack may have been sectarian or even political.
...The shop's owner and three of his assistants were killed in the attack. All four were Christian Copts.
Might have been?