article: The blasts were heard at around 09:45 local time (07:45 GMT) in the Giza area and were around two minutes apart. Local media report that the bombs targeted police vehicles stationed near a bridge. Armed groups have stepped up their attacks in Egypt since the ousting of President Mohamed Morsi by the military in July last year. A BBC journalist at the scene says there is little obvious damage to the area. The attacks took place in Giza Square, a regular route for marches against the current government. Anti-military protests are expected in parts of the capital later, after Friday prayers. The current government has outlawed the Muslim Brotherhood, declaring it a terrorist organisation. It accuses the movement of supporting attacks against the police and army - a claim the Brotherhood strongly denies. Since Mr Morsi's overthrow, more than 1,000 people have been killed and thousands of members of the Muslim Brotherhood - where the ousted leader hails from - have been detained in a crackdown by the interim authorities.
summary: Six police officers have been wounded after two bombs went off in Cairo, the Egyptian health ministry says.