A regulatory group ordered accounts frozen at Iowa-based brokerage Peregrine Financial Group late Monday, saying it hasn’t been able to account for $220 million in customer funds, following what the company said was a suicide attempt by its founder and chairman.

The National Futures Association said it received information that PFG may have falsified bank records, and that the company only had about $5 million of $225 million it had claimed to have in a deposit account. The association, an industry group that serves as a self-regulatory role, said PFG could not demonstrate that it meets capital requirements and rules requiring it to segregate customer funds.