Fairfax County police say a seasonal park worker fatally stabbed a woman who was catering a wedding at a county park in Chantilly.

Police say in a statement they're holding 19-year-old Kempton Bonds of Clifton without bond on a charge of second-degree murder in the incident Saturday night at Ellanor C. Lawrence Park, about 40 miles west of Washington. It's not known if Bonds has an attorney.

Police spokeswoman Monica Meeks says Bonds and 35-year-old Tyonne Johns had argued earlier that night about something.  Then, shortly before 11 p.m., Bonds confronted Johns about whether her company owned some folding chairs she was loading up.

Meeks says Bonds pulled out a 3-inch folding knife and stabbed Johns in the upper body.

She was pronounced dead at the hospital.