Authorities are beginning efforts to identify each one of the approximately 100,000 graves at a suburban Chicago cemetery where four former workers allegedly dug up bodies so they could resell burial plots.

Burr Oak Cemetery in Alsip has been declared a crime scene and closed.

Authorities allege the former workers dug up bodies and either dumped the remains in a vacant lot or double-buried them.

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The Cook County Sheriff's Office says it has received more than 7,000 written inquiries about loved ones.

Meanwhile, a local attorney filed a lawsuit against the cemetery on Friday and told MyFOXChicago the families are more interested in closure than money.

"They want to find their loved ones," personal injury attorney Larry Rogers Senior told the station. "We want records from the cemetery. Whatever is available. We want to know who is where. Many family members don't have where their loved ones were buried."

He filed the lawsuit Friday on behalf of two people who had relatives buried at the cemetery and by Saturday he said more than 200 others in similar situations had contacted him.

The cemetery is home to the graves of civil rights-era lynching victim Emmett Till and blues singer Dinah Washington.

Sheriff Tom Dart says about 300 graves have likely been dug up.

The Associated Press contributed to this report.

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