Cops: Bank robber dubbed "AK-47 Bandit" strikes again in Neb.

NEBRASKA CITY, Neb. - Police in California say a bank robber armed with an assault rifle and known as the "AK-47 Bandit" - who is accused of shooting a police officer - has struck again, reports CBS affiliate KOLN.

According to the station, officials believe the bandit robbed the First National Bank in Nebraska City, Neb., on Aug. 22. No one was harmed. Police in Chino, Calif. - where the police officer was shot and wounded over two years ago - are aiding in the investigation.

The station reports the AK-47 bandit robbed the California Bank and Trust in Chino in February 2012. Following the robbery, he allegedly shot and seriously wounded a Chino police officer.

"We want to make everyone aware of how violent this individual is," said Chino Police Det. Carlos Dominguez, according to KOLN. "He's not afraid to pull the trigger. He's already shot a police officer, so anyone who gives him any resistance, he's not afraid to act."

Since the Chino heist, the bandit has attempted to rob several banks in Sacramento, as well as in Idaho and Washington state, according to the FBI.

The station reports the bank robber in Nebraska was carrying an assault weapon similar to ones used by the AK-47 bandit. Authorities believe the suspect has a law enforcement or military background.

In the California robberies, the bandit was seen in a 2009-2011 dark grey Nissan Maxima with tinted windows and chrome. Three is a $100,000 reward for information leading to an arrest in the case.