Good Samaritans in Tennessee jumped into action and detained a man suspected of fatally shooting two women during an argument in a front yard on Monday until police arrived, authorities said.

Officers responded to a call of shots fired around 3:30 p.m. in the 100 block of Cavalier Drive in Hendersonville, the Hendersonville Police Department said.

Responding officers found two women, identified as 60-year-old Laura Undis and 67-year-old Virginia Deirdre Sheen, with gunshot wounds in the front yard of the residence. Police said the suspect, 72-year-old Lloyd T. Martin Jr., was already detained by the good Samaritans when officers arrived.

Officials said a preliminary investigation revealed Martin had been in a failed relationship with Undis.

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Lloyd Martin mugshot

Lloyd T. Martin Jr., 72, will be charged with two counts of first-degree murder and one count of aggravated assault. (Hendersonville Police Department)

When Martin and Undis began arguing in the front yard of the home, Sheen, a neighbor, had tried to intervene, police said. Martin allegedly drew a pistol and began shooting, striking Undis and Sheen.

Both women were rushed to the Hendersonville Medical Center, where they both died, according to authorities.

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Martin was taken into police custody and will be charged with two counts of first-degree murder and one count of aggravated assault.