Two American victims of the 1986 hijacking of Pan Am Flight 73 have sued Washington’s Crowell & Moring over its demand that they share their multimillion-dollar award with other Flight 73 victims represented by the law firm.

The lawsuit — Dave v. Crowell & Moring and Pan Am Flight 73 Liaison Group — was filed Jan. 4 in Los Angeles County Superior Court by two sisters, Gargi and Giatri Davé, who, as children, suffered severe injuries in the hijacking at the Karachi, Pakistan airport. Twenty passengers were killed and more than 120 were wounded during the assault.