TOPEKA, Kan. (WIBW) - A robber caught on camera in what Topeka Police say is the biggest business theft in memory still hasn't been caught. But now the business involved has upped the ante.

"Walmart is offering an additional $5,000 for any info leading to the arrest or prosecution of the individual or individuals involved in this crime," Lt. Joe Perry with the Topeka Police Department said.

A daring robber, white, male, bald and barely disguised walked into a Walmart Supercenter on 1301 SW 37th Street in the early morning hours a day after Thanksgiving.

Without threats or confrontation, the man strolled into a manager's office and strolled out with an amount between $200,00 and $500,000.

Topeka Police Department detectives and Wal-Mart's Asset Protection Division have been working this case, a felony theft, for the past few months.

Detective Terry Harris, the lead investigator in the case, said many people have called with information that detectives have combed through, but they believe there is someone out there with specific knowledge of the suspect or suspects.

"Those people that we know have specific information, those are the people we're hoping will call in," he said.

"As with a lot of crimes, people are scared to provide information or don't want to be involved and we need those people to be involved," he said.

"We do believe there is someone out there who may have information about who's responsible," Dianne Gee, a Walmart spokeswoman said. "We hope that this reward will give an incentive for someone to come forward."

Detective said multiple people may have been involved in the incident or know about it.

The suspect sped away in a stolen, silver Chevrolet Malibu. The car has been recovered and its owner has not been linked to the crime.

Police won't say if the thief had inside knowledge of the store or if he could have been a Walmart employee.

The $5,000 reward offered by Walmart reward is in addition to the up to $2,000 offered by Crime Stoppers.

Anyone with information on the suspect or the crime is asked to call Det. Terry Harris at 785-368-9403 or Crime Stoppers at 785-234-0007, if they wish to remain anonymous.