Lucinda’s wound was described as non-life-threatening. (Fairfax County Police Department)

Looks like Fairfax County Police are still a long way from closing the case of barnyard animals suffering knife attacks. Though police last month arrested a 17-year-old in connection with a recent spate of attacks on animals at Frying Pan Farm Park in Herndon, a horse at an adjacent property was found to have been slashed over the weekend.

The horse, a 13-year-old Haflinger named Lucinda, was slashed between 8 p.m. Saturday and 10:30 a.m. Sunday, police said. The golden-maned equine resides in a paddock at 2625 Centreville Road, attached to but not part of Frying Pan Park. Lucinda is part of a program that uses horseback riding as therapy for adults and children with disabilities.

But the attack last weekend was not Lucinda’s first encounter with a blade-wielding intruder. In April, she and two other horses in the therapy program were knifed, suffering non-life-threatening injuries.

Lucinda’s wound discovered yesterday is also non-life-threatening, but it brings more mystery into the rash of animal attacks that Herndon has seen lately. The teenager arrested last month is being charged in connection with the incident at Frying Pan Park, in which two goats, a calf and a chicken at the park’s petting zoo were stabbed. But the boy has been held at Fairfax County’s juvenile detention center since his June 25 arrest, police said.