Authorities say he held up the First Citizens Bank branch in Zebulon around 3 p.m., and then headed over to Cary, where he robbed the Wachovia branch around closing time.
"He wasn't running," Cary Police Sgt. Rick Glancy said. "He basically was calm, cool and collected. He didn't really draw any extra attention to himself.
No one was injured nor were there any acts of violence committed during the robberies.
The suspect in Friday's holdups fit the same description as the man in the other robberies.
"It's a black male, he's got a mustache, kind of scruffy beard, about 5 feet 8 inches tall," Glancy said.
During Friday's robberies, he was wearing white sneakers, blue jeans and a grey, long sleeve polo-type shirt, as well as his signature disguise.
"He wears a baseball cap, he'll pull it down low, he'll wear dark sunglasses," Glancy said.
Hours after the crime in Cary, police scoured the area and used a canine from Holly Springs in an effort to sniff out some clues that might lead them to the suspect. But so far there has not been any leads.
Authorities throughout the Triangle say they are on high alert. They believe the same man has hit up at least 10 banks since last August.
All of the previous robberies have been mainly in Durham, Raleigh and Chapel Hill. Authorities say many have taken place at bank branches inside busy grocery stores.
Surveillance cameras have captured several images of the suspect wearing sunglasses and a baseball cap in many of the robberies. Detectives say he may live in the Greensboro area.
Retired Raleigh Police Officer Chris Morgan says he believes the "Repeat Robber" knows what he's doing.
"This is pretty obviously an organized offender who has taken time to plan these things out," he said. "Dangerous guy, the public needs to be aware. The more times they do it, the more dangerous they become."
Anyone with information about the Chapel Hill Police Department at 919-968-2760 or Crime Stoppers at 919-942-7515. Calls to CrimeStoppers are confidential and anonymous, and the caller may be eligible for a cash reward up to $2,000 for information that leads to arrest.
If you have information about any of the Raleigh robberies, call Raleigh CrimeStoppers at 919-834-HELP. And for information about the Durham robberies, call Durham CrimeStoppers at 919-683-1200.
The North Carolina Bankers Association also offers a reward for information leading to the arrest and indictment of anyone responsible for robbing a bank in North Carolina.
If anyone has information about the suspect or the robberies, call the FBI in Raleigh at 919-380-4500. Tips may also be submitted through the website www.ncbankrobbers.com.
08/10/2009 -- SunTrust, 7905 Falls of the Neuse Road, Raleigh
09/24/2010 -- SunTrust, 1231 University Drive, Durham
09/25/2010 -- SunTrust, 1817 Martin Luther King Boulevard, Durham
09/26/2010 -- Woodforest National Bank, 10050 Glenwood Avenue, Raleigh
09/28/2010 -- SunTrust, 3421 Roxboro Road, Durham
09/29/2010 -- SunTrust, 8345 Creedmoor Road, Raleigh
10/02/2010 -- SunTrust, 7905 Falls of the Neuse Road, Raleigh
10/05/2010 -- BB and T, 143 E. Rosemary Street, Chapel Hill
10/08/2010 -- First Citizens Bank, 101 Wakelon St, Zebulon
10/08/2010 -- Wachovia, 1701 N Harrison, Cary