The investigation was prompted to look into Basildon Hospital after two consecutive years of higher than expected deaths. According to NHS statistics, which also take into account patients who died within 30 days of being discharged:
Between July 2010 and June 2011 there were 263 more deaths than the 1658 expected.
Between July 2011 and June 2012 there were 244 more than the projected 1699.
More top news
Reclaim the Power stage a protest at Heathrow against a new runway or further airport expansion.
Eight more people were hurt in the collision.
Police are hunting a man who is suspected of grabbing an 11-year-old girl who only got away by biting her attacker's hand.