The US Attorney General Eric Holder has said that authorities negotiated with BP to resolve the civil claims it is facing but was unable to reach a "satisfactory" number.
He added that is was possible that the US and the oil giant could still resolve the claims out of court, but that officials are preparing for trial.
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A plane which skidded off a runway and down a steep embankment in Turkey has been recovered as investigations get underway.
ITV News spent a day with a West Midlands ambulance crew to see first-hand the pressure they are under.
It is alleged the couple committed years of torture and abuse, leaving their children malnourished, undersized and cognitively impaired.