Daphy Michel, from Haiti, was dropped off in Pittsburgh in 20F temperatures wearing summer clothes

The family of a Haitian immigrant who froze to death in early March at a bus shelter in Pittsburgh after she was dropped off in the city by Immigration and Customs Enforcement (ICE) is poised to file a lawsuit this month against the United States and “multiple other governmental and non-governmental entities”, the Guardian has learned.

Daphy Michel, 31, had been in county jail for six months after a reported mental health crisis and street incident, and then was arrested by ICE before being released with a ankle monitor.

She was left to make her way home to Charleroi, a small community on the outskirts of Pittsburgh about 20 miles (32km) away, but was found dead three days later. In June, Pennsylvania officials said she died from hypothermia and ruled her death a homicide.