DENVER -- Two brothers accused of killing five people at a Denver bar during a robbery and then setting the building on fire to destroy evidence have pleaded guilty in deals with prosecutors.

Joseph Hill, 27, pleaded guilty Tuesday to five counts of first-degree murder and will be sentenced to life in prison at a hearing Oct. 3.

Lynell Hill, 25, pleaded guilty to one count of second-degree murder naming all five victims, aggravated robbery and first-degree arson. His plea agreement stipulates a 70-year prison term.

A third man, Dexter Lewis, 23, is also charged in the fatal stabbings and cover-up fire at Fero's Bar and Grill in October. He could face the death penalty, the Denver Post reported (http://bit.ly/13766Nh). The district attorney has until Friday to decide.

Investigators say the robbery was motivated by Lynell Hill's need for money to pay for an unrelated court case. The group allegedly left the bar with about $170.

Killed were bar owner Young Suk Fero, 63, of Aurora; Daria M. Pohl, 21, of Denver; Kellene Fallon, 44, of Denver; Ross Richter, 29, of Overland Park, Kan.; and Tereasa Beesley, 45, of Denver.

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Information from: The Denver Post, http://www.denverpost.com

Earlier on HuffPost:

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  • Fero's Bar and Grill

    Police are pictured at Fero's Bar and Grill in Denver on Wednesday, Oct. 17, 2012, where the bodies of a man and four woman were discovered after firefighters extinguished a fire at the bar early Wednesday morning.(AP Photo/Ed Andrieski)

  • Robert White, Ronald Saunier

    Denver Police Chief Robert White speaks at a news conference across the street from Fero's Bar and Grill in Denver on Wednesday, Oct. 17, 2012, where the bodies of a man and four woman were discovered after firefighters extinguished a fire at the bar early Wednesday morning. Police think the blaze was set to cover up their slayings. Commander Ronald Saunier listens at left. (AP Photo/Ed Andrieski)

  • Denver Police

    A police officer removes equipment at Fero's Bar and Grill in Denver on Wednesday, Oct. 17, 2012, where the bodies of a man and four woman were discovered after firefighters extinguished a fire at the bar early Wednesday morning. Police think the blaze was set to cover up their slayings. (AP Photo/Ed Andrieski)

  • Robert White

    Denver Police Chief Robert White speaks at a news conference across the street from Fero's Bar and Grill in Denver on Wednesday, Oct. 17, 2012, where the bodies of a man and four woman were discovered after firefighters extinguished a fire at the bar early Wednesday morning. Police think the blaze was set to cover up their slayings. (AP Photo/Ed Andrieski)

  • Fero's Bar and Grill

    Police investigate at Fero's Bar and Grill in Denver on Wednesday, Oct. 17, 2012, where the bodies of a man and four woman were discovered after firefighters extinguished a fire at the bar early Wednesday morning. Police think the blaze was set to cover up their slayings.(AP Photo/Ed Andrieski)

  • Denver Police

    A Denver Police officer stands watch at Fero's Bar and Grill in Denver on Wednesday, Oct. 17, 2012, where the bodies of a man and four woman were discovered after firefighters extinguished a fire at the bar early Wednesday morning. Police think the blaze was set to cover up their slayings.(AP Photo/Ed Andrieski)

  • Denver Police

    Police leave the front door at Fero's Bar and Grill in Denver on Wednesday, Oct. 17, 2012, where the bodies of a man and four woman were discovered after firefighters extinguished a fire at the bar early Wednesday morning. Police think the blaze was set to cover up their slayings. (AP Photo/Ed Andrieski)

  • Randy Denison

    Denver Police Detective Randy Denison talks on his phone at Fero's Bar and Grill in Denver on Wednesday, Oct. 17, 2012, where the bodies of a man and four woman were discovered after firefighters extinguished a fire at the bar early Wednesday morning. Police think the blaze was set to cover up their slayings. (AP Photo/Ed Andrieski)

  • Denver Bar Fire

    Police investigators walk into Fero's Bar and Grill in Denver on Wednesday, Oct. 17, 2012, where the bodies of a man and four woman were discovered after firefighters extinguished a fire at the bar early Wednesday morning. Police think the blaze was set to cover up their slayings. (AP Photo/Ed Andrieski)

  • Randy Denison, Scott Christiansen

    Denver Police Detective Randy Denison, right, takes a statement from Scott Christiansen at Fero's Bar and Grill in Denver on Wednesday, Oct. 17, 2012, where the bodies of a man and four women were discovered after firefighters extinguished a fire at the bar early in the morning. Police think the blaze was set to cover up the slayings. Christiansen says he was a regular customer at the bar. (AP Photo/Ed Andrieski)

  • Fero's Bar and Grill

    A young man leaves flowers at an informal memorial at Fero's Bar and Grill in Denver on Thursday, Oct. 18, 2012. The bodies of a man and four woman were discovered after firefighters extinguished a fire at the bar early Wednesday morning. Police have arrested three suspects in the case. (AP Photo/Ed Andrieski)

  • Fero's Bar and Grill

    Flowers and stuffed animals are left at an informal memorial at Fero's Bar and Grill in Denver on Thursday, Oct. 18, 2012. The bodies of a man and four woman were discovered after firefighters extinguished a fire at the bar early Wednesday morning. Police have arrested three suspects in the case.(AP Photo/Ed Andrieski)

  • Fero's Bar and Grill

    Flowers and stuffed animals are left at a memorial at Fero's Bar and Grill in Denver on Thursday, Oct. 18, 2012. The bodies of a man and four woman were discovered after firefighters extinguished a fire at the bar early Wednesday morning. Police have arrested three suspects in the case.(AP Photo/Ed Andrieski)