The former Mars Volta and Marilyn Manson bass player suffered a severe head injury in a bicycle accident Friday.

His wife posted this announcement on Juans' Instagram:

Juan was in a solo (no cars, other people) and very serious bicycle accident on 1/13/20 not far from our home. He - as always - was wearing a helmet and protective clothing but sustained serious head trauma in the form of a Traumatic Brain Injury (TBI); his form of TBI is Diffuse Axonal Injury (DAI) and as of today, he remains in a coma.
The only prognosis is to wait and see, as the brain is a complicated organ and the outcomes for DAI patients has a range as wide as the sea. While frustrating, it also allows for a world of positive outcomes so we can only hope for the best.
We know you have questions, concerns, thoughts to share, so please feel free to leave them in the comments (not DM please, sorry) here. We're also very eager to hear from neurologists, medical professionals with experience in DAI and TBI, first-person accounts of similar trauma and outcomes - essentially any useful, factual and accurate resources that relate to Juan's injury. If you have any of these, please DM me (Anne) @tunatoast.
We will post updates here from time to time. Thank you all and please keep Juan in your thoughts. - xo, Anne

In addition to Marilyn Manson and Mars Volta, Juan has also worked with Halo Orbit, Deltron 3030, Dr Octagon, JonWayne, Big Sir, Lil Peep, B'z, Racer X, Juliette Lewis and Vato Negro🇲🇽.  After The Mars Volta broke up, Juan continued to work with fellow members Omar Rodriguez-Lopez and Cedric Bixler-Zavala.

Prayers to Juan and his family for a full and speedy recovery.