Foreclosure filings in the US plunged to a two-year low last month, RealtyTrac said, as all 50 states probed whether faulty documents and signatures were used by lenders on hundreds of thousands of foreclosure papers in “robo-signings.”

A total of 262,339 US properties received default or auction notices or were seized in November, down 21 percent from October and down 14 percent from a year earlier.