A mistrial has been declared in a heavily litigated malpractice case against Proskauer Rose after a six-week trial in Palm Beach Circuit Court.

The mistrial was declared late Friday after jurors were divided after three days of deliberation. A retrial is expected early next year, said Boca Raton attorney Steven Katzman of Katzman Wasserman Bennardini & Rubinstein, which represented plaintiff Boca Aviation.