GRAND RAPIDS, Mich. (AP) — Two women and a baby found in a car in Grand Rapids died from carbon monoxide exposure, authorities said.

Ruby Roberts, 78, daughter-in-law Ellay Mae Brown, 60, and Zaida Ashford, 4 months, were discovered outside Roberts’ house on Nov. 4.

READ MORE: Michigan Announces $1.5 Million Tuition Giveaway, 100 Children To Receive $15,000

Police have released few details. But death certificates reviewed by indicate that carbon monoxide from the vehicle killed them. Autopsies were performed.

Funeral services for the three were held Monday.

READ MORE: AAA Offers 'Tow To Go' Program During Memorial Day Weekend

Roberts’ granddaughter, Nicole Dantzler, said she discovered them in the vehicle.

“They would do anything for anyone. Give money out of their own pockets,” Dantzler said last week, referring to Roberts and Brown.

MORE NEWS: Holiday Travel And Gas: What To Expect At The Pump

© 2021 Associated Press. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed