PITTSBURGH (KDKA) – Sean Green is accused of robbing three different banks in December of 2015.

A county detective testified that Green confessed to each robbery. He also admitted that he robbed the banks to get money for heroin.

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His attorney calls those admissions into question.

“Confessions given under such a substance, I question the constitutionality of them and special procedures need to be in place to get these people help,” said defense attorney Ryan Breen.

The most recent robbery happened on December 26 at the First National Bank in Castle Shannon. The PNC Bank in Mt. Lebanon was robbed on December 22. Green’s first target was a Dollar Bank in Crafton on December 8.

In each robbery, tellers testified that Green gave them a note demanding money and no dye packs. He also claimed to have a gun but no weapon was ever seen.

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During the robbery of the First National Bank, Green made off with $381.

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Police say he and accomplice Amber Johnson, who drove the getaway car, bought $200 worth of heroin and went to a motel.

“Heroin always ends up as a backdoor to these kind of cases, so it’s kind of a downward spiral that leads to this sort of behavior,” says Breen.

Later that day, police from Crafton and Pittsburgh spotted a car that matched the description of the one used in the robbery. Officers chased the car down Stueben Street in the west end for around five miles until they reached Route 51.

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Green wrecked the car and tried to run but was tackled by police. A taser was used to get him to cooperate.