More than two years after the murder of 51-year-old math professor Martha “Bettina” Richmond, police continue investigating the case.

Bowling Green police are still submitting evidence to the state, said Ronnie Ward, public information officer for the Bowling Green Police Department.

“The state only accepts so many pieces of evidence at a time, and they have to process it,” he said.

Police found Richmond dead in her vehicle, which was parked in the Bowling Green Parks and Recreation parking lot just before 11:30 p.m. on Nov. 22, 2009.

According to the autopsy report, Richmond died of multiple stab wounds.

Ward said there have been several leads that have been investigated concerning suspects, but none have shown as viable suspects.

“It’s still an ongoing investigation, and it’s very much active,” Ward said.

Ward said the lead detective on the case, Detective Melinda Jones, eats, sleeps and breathes Richmond’s case but can’t be contacted for comment.

Although Ward can’t comment on the status of evidence, he said that there’s so much that it’s hard to attach a number to the quantity of it.

Some of the evidence includes the van where Richmond’s body was found, a tan-colored Honda Odyssey and Richmond’s WKU ID that was found in a mailbox in the 1100 block of Crewdson Drive.

Police are still looking for people to come forward with information about the death of the 23-year veteran WKU professor, Ward said.

Richmond’s husband is also a math professor at WKU but was unavailable for comment. If anyone has information, the police ask that they call BGPD.

“We’d like to say ‘Yes, we have a suspect,’ but we don’t,” he said. “You never know — tomorrow we may get the phone call or Monday the evidence will come back and say, ‘Here’s your guy.’”