(WMC-TV) - Collierville police said murdered Memphis basketball star Lorenzen Wright's ex-wife did not tell them everything she knew when her ex-husband disappeared.
In court documents, the city of Collierville said Sherra Wright withheld critical information from Collierville detectives.
"If I was her, I would have told them everything they needed to know," said Lorenzen Wright's mother Deborah Marion. "Whether I was divorced from him or not, because he's still the father of my six kids."
Marion said she is frustrated with Sherra Wright, who is the mother of her six grandchildren.
"I wouldn't have held anything back," she said. "I would have taken a polygraph and everything because I would want my kids to know their mother is telling the truth."
Lorenzen Wright played for the University of Memphis Tigers, the Memphis Grizzlies, and four other NBA teams. He was found shot to death in a wooded area July 28, 2010.
Police said Sherra Wright was the last person to see him alive 10 days earlier. Four days later, Marion reported him missing.
In a lawsuit, Sherra Wright argued Collierville police failed to look into her ex-husband's cell phone records or see if neighboring jurisdictions knew anything about his disappearance.
In a response to her lawsuit, Collierville said Sherra Wright withheld critical information including, "information regarding the prior criminal activity on the part of decedent, Lorenzen Wright, and the fact that he was being sought by unknown persons who caused her concern."
The lawsuit said nine days after Lorenzen Wright's disappearance, "Sherra Wright advised Collierville detectives for the first time that two males had come to her house five weeks ago in a car with Miami tags, looking for Mr. Wright."
Marion said she is skeptical if Sherra Wright's delayed story is true.
"Where is the picture composite of these guys?" she asked. "It's just questionable. Where are these guys from? What they look like? What's their height, their complexion? Who are they?"
Sherra Wright has a criminal defense attorney. She was questioned by police shortly after the murder, but has never been named a suspect in the case.
The reward in Lorenzen Wright's murder case was raised last week from $5,000 to $21,000. Police said they still have few leads.
If you know anything that could help investigators, please call (901) 528-CASH.