Teresa Youngblut is alleged to have taken part in a shooting in which a US border agent was killed in Vermont.

Growing demands, arrivals at all hours and a rare disease are just some of the challenges Vermont’s prisons have faced while working with federal immigration authorities.

DERBY — Vermont State Police arrested three people Friday afternoon after OnStar tracked a stolen vehicle to a farm field area. Troopers were notified around 4:30 p.m. June 27 that OnStar was tracking ...