DETROIT -

Massive crash shuts down I-75 at Springwells It was a catastrophic crash many will never forget.
Dozens of cars piled up on I-75 in a chain-reaction wreck last that killed three people on a slick Detroit freeway during a sudden snow squall in January.

Now, the family of two children who lost their lives are launching a new effort to find out exactly what went wrong.

Lawyer Greg Monforton announced Thursday that his law firm has been retained by the family of the two young victims from Windsor.

Nine-year-old Gabrielle Greenwood and her 7-year-old brother Aidin Hicks, both died in the crash.

The children's mother Kim Barrett suffered catastrophic injuries and remains hospitalized in Detroit

Father, Glen Greenwood and the family's eldest daughter, Hannah Greenwood, 10, survived the crash. Both are recovering from serious injuries.

The family is now asking the public for help in piecing together what happened on the morning of the pileup.

Monforton said, "our law firm has been retained to investigate and prosecute civil claims against those responsible for this horrible tragedy. The family is suffering unspeakable pain and has asked us to thank the media and the public for respecting their privacy at this time."

Witnesses can contact Monforton at 519-258-6490 or his U.S. co-counsel Robert Darling at 248-880-0180.

SPECIAL COVERAGE: Deadly I-75 crash

Gabrielle Greenwood and brother Aidin Hicks

Menlaos "Larry" Manolis, 54, of Allen Park also died in the crash.

His vehicle appeared to have been crushed between two tractor trailers near the front of the multi-vehicle accident.