The man accused of murdering a Dorchester barber was ordered held without bail Monday after police spent months investigating the circumstances surrounding the 2014 stabbing.

Boston homicide detectives arrested Dominic Shiner, 33, of Malden on a warrant on September 11, charging him with the first-degree murder of Sean Dwyer, 29 in December 2014. 

“There’s no substitute for a careful, methodical, painstaking investigation,” District Attorney Dan Conley said in a press release. “I hope Mr. Dwyer’s loved ones can take some satisfaction knowing that police and prosecutors left no stone unturned in their efforts to find the truth.”

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Police responded to a call on December 12 for a man stabbed on Adams Street at about 6:20 p.m.. There, officers say they found an unresponsive Dwyer who was suffering from a stab wound to the chest. He was pronounced dead at the scene. 

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“I wish to acknowledge the great work of homicide investigators and all involved who helped bring about today’s arrest. It was a great team effort,” Boston Police Commissioner Bill Evans said in a press release.. “I hope that this arrest brings some level of comfort to the Dwyer family. I will continue to keep them in my thoughts and prayers.”

According to the Boston Globe, one of Dwyer’s friends said that Shiner and Dwyer grew up together in Southie. Two days before the killing, Dwyer told his friend that Shiner threatened to rob the barber shop after he stopped by to ask to borrow money.