Mohammed’s offer was disclosed in a Friday filing in the victims’ federal lawsuit in New York, which accuses the Saudi government of helping coordinate the 2001 suicide attacks. Nearly 3,000 people were killed when terrorists crashed hijacked airliners into the World Trade Center, the Pentagon and, due to passenger resistance, a field in Pennsylvania . Riyadh has denied complicity in the attacks. James Kreindler, a lawyer for the victims’ families, said in an interview with CNBC that he is not sure whether the offer was serious.