Erika Jayne's Estranged Husband Has Assets Frozen, Possible Criminal Investigation

'RHOBH' star Erika Jayne's estranged husband has had his assets frozen and a judge now wants prosecutors to have a look at what he allegedly did.

A federal judge said Tom Girardi conducted himself in an "unconscionable" manner ... finding that he misappropriated at least $2 million in client money. Even more ominous ... the judge is referring the matter to the U.S. Attorney's Office for possible criminal investigation.

The money was intended to compensate the families of victims of the Boing 737 Max, Lion Air crash. Lawyers for Girardi said their client didn't currently have the $2 mil he owes his clients ... shockingly announcing Girardi's firm has a measly $15k in the bank.

And, get this ... Girardi's lawyers said they had concerns about his mental competency, adding they were unsure if he understood the seriousness of the case. One of his lawyers told the judge she wanted Girardi to undergo a mental evaluation ... this according to the L.A. Times, which first reported the news.

As if the legal fallout couldn't get any worse ... Girardi's facing TWO more lawsuits -- one from Robert Keese, the other named partner in Girardi's firm, who claims Girardi owes him $506k for using his name per a deal they struck. Keese says Girardi made some payments but then stopped.

In the second lawsuit ... Girardi's partners in a venture called 1126 Wilshire filed legal docs to dissolve the partnership ... claiming Girardi fraudulently encumbered property the partnership owns worth around $7.5 million.