Michael Jeffries requires round-the-clock care because the 80-year-old has Alzheimer’s disease, Lewy body dementia and the “residual effects of a traumatic brain injury,” defense attorneys wrote in a letter filed Thursday in a New York federal court, citing recent evaluations by medical professionals.

Prosecutors and defense lawyers want a federal judge in Central Islip to place Jeffries in the custody of the federal Bureau of Prisons for up to four months so that he can be hospitalized and receive treatment that might allow his criminal case to proceed.