Federal authorities have arrested a Bristol couple in connection with a spree of 30 armed robberies over two months that included six in eastern Connecticut in one night in October.

Lonny Cross, 44, and Rebecca Barbera, 40, were charged in connection with robberies at gas station convenience stores, mini-markets and liquor stores that occurred between Sept. 5 and Oct. 13. The robberies were committed statewide but included stores in Norwich, Franklin, Waterford, Groton, Stonington and Ledyard.

A federal grand jury in Hartford returned an indictment against the couple on Wednesday, U.S. Attorney Vanessa Roberts and David Sundberg, a special agent in charge of the New Haven division of the FBI, announced in a statement.

In addition to the robberies, Cross is also charged with a narcotics distribution offense. He was arrested on Oct. 14 when a search of his home and vehicle turned up 184 bags of heroin, crack cocaine and clothing consistent with those worn by the suspect in several of the robberies.

Cross was on parole at the time of his arrest, authorities said.  He has been detained since his arrest.

Barbera was arrested on Oct. 28 on a federal criminal complaint and is now free on a $10,000 bond. Authorities said Barbera’s role in the robberies was to enter the stores to determine the number of employees and customers and report the information to Cross, according to the indictment.

“Cross would then enter the store, display a knife or firearm while threatening employees, and steal cash and other items,” authorities said.

The indictment charges Cross and Barbera with one count of conspiracy to commit a Hobbs Act Robbery, an offense that carries up to 20 years in prison and is used in federal robbery cases.

Cross is also charged with one count of possession with intent to distribute crack and heroin, which also carries up to 20 years in prison.