UPDATE: A third arrest has been made in this case.

WYCKOFF — Police say a Wyckoff woman lured her ex-boyfriend to a local park so that her current boyfriend could rob and beat him.

Margaux H. Tocci, 19, was arrested early Friday and charged with the crime, but was not cooperating with the investigation, police said. Wyckoff Police Chief Benjamin Fox said officers from his department located the woman's current boyfriend, Daniel A. Chaupiz, later that day.

Police said that Tocci had lured the victim, a 19-year-old Ridgewood man with whom she'd had a prior romantic relationship, to the Lincoln Elementary School on Mason Avenue Thursday. Once there, the man was attacked with a baseball bat and a pipe by two men, police said.

Fox said that Chaupiz allegedly took a bat to the man and stole money from his wallet. Tocci then allegedly drove the two men from the scene in her car, leaving the victim bloodied and suffering from head injuries.

Tocci would not implicate the men in the crime, but police suspected Chaupiz's involvement and began surveillance on his home, Fox said.

Sgt. Jack McEwan was stationed near his Crescent Ave. residence when he saw a vehicle being driven by a "known associate" of the suspect on a nearby street.

"Chaupiz was found in the car lying across the seat," Fox said.

He is being held at Bergen County Jail on $100,000 bail on robbery and assault charges. Tocci is being held there on $50,000 bail.

Police do not know what motive prompted the attack, and more arrests could be made.

"The investigation is continuing to apprehend and prosecute one other person who was involved in the attack, and perhaps a third man," Fox said.

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• Police: Wyckoff teen lured her ex-boyfriend to park for beating