A former Brooklyn, N.Y., lawyer has pleaded guilty to fleecing millions of dollars from guardianship accounts he oversaw for incapacitated seniors and children.

Steven T. Rondos and his law firm, Raia & Rondos, were indicted in January on money laundering and grand larceny charges for stealing more than $4 million. On Wednesday, Rondos pleaded guilty to all 19 counts of the indictment, said his lawyer, Franklin A. Rothman.