A York County man is jailed at the Lancaster County Detention Center after being charged Saturday with head-butting one police officer and biting another during a drug-related clash in a restaurant parking lot. Neither officer was seriously hurt, said Lancaster Police Chief Scott Grant. Tristan Baker Merck, 21, of Rock Hill, is charged with two counts of assaulting a police officer, trafficking cocaine (74.5 grams), simple possession of marijuana, possession of drug paraphernalia, open-container violation and disorderly conduct.