T.G.I. Friday’s says a severed snake head found in a dish of broccoli at one of its upstate New York restaurants was apparently planted in the meal.

Company spokeswoman Amy Freshwater said Friday independent laboratory tests confirmed the snake head wasn’t cooked but was added to cooked broccoli at its Clifton Park restaurant. The Carrollton, Texas, company has asked state police to investigate.

Diner Jack Pendleton of Ballston Lake says he found the snake head on Sunday.

Freshwater says the company doesn’t know who put the head in the meal. Pendleton says he didn’t.