CONCORD – A Milford man charged with robbing a Merrimack bank last summer armed with a shotgun has agreed to an 11-year federal prison sentence.

Frank Mione, 48, of 16 Birchwood Lane, Milford, has also been linked to a series of high-profile bank robberies in Manhattan – as a getaway driver – that ended in a wild police chase. In August, he was charged with threatening several tellers at the TD Bank at 300 Daniel Webster Highway in Merrimack with a shotgun and stealing more than $2,000.

The U.S. Attorney’s Office agreed to recommend a 136-month sentence in exchange for Mione’s guilty plea to a charge of bank robbery using a dangerous weapon and brandishing a firearm during a crime of violence, according to court documents posted on the U.S. District Court website.

More details of what happened inside the bank were included in the plea agreement submitted to the Concord court last week.

Mione entered the bank armed with a black Mossberg Model 500A pistol grip shotgun wrapped in a white towel. He approached a teller and demanded $50 and $100 bills and became upset when she only gave him a few $100 bills. He then moved down the counter, pointing the gun at least two more tellers and demanding money, according to the agreement.

“Several of the tellers described that the robber was upset at the lack of money he was being provided and that he threatened to shoot them if they did not provide him with more cash,” according to the plea agreement.

Mione then fled the bank with about $2,200, dropping a bag of money on his way out of the building, which investigators later found his fingerprints on, according to court documents.

Merrimack police received tips that Mione had committed the robbery and a woman he knows identified him from surveillance footage. Police later found a shotgun and ammunition, as well as clothes matching that of the robber while searching Mione’s home. Police also found $7,000 in cash, mostly in $50 and $100 bills, in Mione’s pockets, according to the plea agreement.

Mione appeared in U.S. District Court on Monday to change his plea to guilty. He is scheduled to be sentenced on Jan. 16, according to court records.

Mione has been in jail since his arrest after Merrimack district court Judge Clifford Kinghorn set his bail at $250,000 cash.

Police in New York had been searching for Mione for his alleged role as the driver for Maverick Madore. Madore, a 20-year-old New Hampshire man, is accused in a string of bank robberies in midtown Manhattan that ended in a failed getaway on foot through the Lincoln Tunnel, according to reports.

At his arraignment, Melissa Kowalewski, the Merrimack police prosecutor, outlined Mione’s lengthy criminal history dating to a 1990 robbery charge in New York and a 1992 fugitive from justice charge out of New Jersey that was later dropped.

He also was convicted of robbery and burglary in New Jersey in 1993 and sentenced to two to 10 years in prison. In 1994, federal prosecutors convicted him of bank robbery, and he served 10 years in prison, Kowalewski said.

In 2002, he was convicted of felony theft in Milford and served a six month sentence and then received a 90 day deferred sentence in 2008 in Hudson for false impersonation, Kowalewski said.

Joseph G. Cote can be reached at 594-6415 or jcote@nashuatelegraph.com. Also, follow Cote on Twitter (@Telegraph_JoeC).