Police in Kenya are expected to soon reveal what caused two explosions at a political rally in the capital, Nairobi.<br /><br />At least six people were killed and more than 100 others wounded during the incident on Sunday.<br /><br />The back-to-back explosions went off at a rally held to protest against a referendum on a new draft constitution.<br /><br />Al Jazeera's Zeina Awad reports from the capital.
