MARIN COUNTY — Three young people were arrested and hospitalized, one with injuries, Sunday morning in the wake of what officials described as “a Mill Valley LSD party gone bad.”

Southern Marin Fire paramedics responded around 7:30 a.m. to a 911 call reporting a 16-year-old boy having a seizure at a residence in the 100 block of Reed Boulevard, said Marin County sheriff’s Lt. Doug Pittman.

When the paramedics tried to get in, another 16-year-old boy at the entry gate covered with blood attacked them with what they later described as “superhuman strength,” refusing to let them in, Pittman said. Marin County sheriff’s deputies arrived within minutes to help, Pittman said.

The deputies were confronted by other partygoers, including a combative young girl, and called for backup. During the struggle, the boy spit blood on the responders, Pittman said. Mill Valley, Tiburon, Central Marin and California Highway Patrol officers responded and brought the situation under control, Pittman said.

The paramedics were then finally able to attend to the bloody 16-year-old, who turned out to be the person reported as having an LSD-related seizure, Pittman said.

The first responders found about 10 partygoers at the home, Pittman said. Some of them were also covered with blood from injuries the 16-year-old accidentally inflicted on himself while under the influence, Pittman said.

A 16-year-old girl whose family owns the residence, which is vacant and up for sale, had a key and let others in for a party that apparently started the night before, Pittman said.

The girl was cited under Marin County’s social host ordinance for hosting a gathering involving illegal conduct constituting a threat to public health, safety or the welfare of an underage person or persons, Pittman said. She was released to her parents.

The 16-year-old blood-spattered boy involved in the altercation at the gate, one 18-year-old man and one 18-year-old woman were arrested on suspicion of being under the influence of an unknown substance, resisting arrest, assaulting a peace officer, assaulting emergency rescue personnel and contributing to the delinquency of a minor, Pittman said.

The three were taken to a local hospital for medical treatment because all of them appeared to be under the influence of drugs and the 16-year-old boy was injured, Pittman said. Marijuana, cocaine, heroin and a “designer drug” similar to Ecstasy called DMD were found in the house, Pittman said.

The 18-year-olds will be booked at Marin County Jail and the 16-year-old will be booked at Marin County Juvenile Hall once they receive medical clearance, Pittman said. No further information was available on the nature and extent of the 16-year-old’s injuries.

The sheriff’s office is continuing its investigation into the party, Pittman said. Anyone with information is encouraged to contact the sheriff’s investigations unit at 473-7265 or Bay Area Crime Stoppers at 800-222-TIPS.

Contact Janis Mara via email at jmara@marinij.com. Follow her at Twitter.com/jmara.

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