Police said two brothers have been charged in the fatal beating of an 83-year-old woman Friday afternoon in Irving.[[363041821,R]]

Officers responded to reports of an 83-year-old woman lying injured on the ground in the 1300 block of Boyd Drive at about 4 p.m. and found Dessie Hancock severely injured. Investigators concluded Hancock was attacked while walking home from visiting someone.

Police said a man — later identified as 20-year-old Jesse Perkins — punched, kicked and stomped Hancock before he and his two brothers ran away.

Hancock was rushed to Parkland Memorial Hospital, where she was placed on life support. She died shortly before 9 p.m. Sunday, police said.

Officers initially arrested Perkins, 18-year-old Thomas Perkins and 19-year-old Edward Perkins on aggravated assault charges. However, Edward's charges have since been dropped and he has been released from jail.

"We have no evidence that he participated in this attack in any way or attempted to cover it up," said James McLellan, a spokesman for the Irving Police Department. "At this point, he does not have any criminal responsibility in this."

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Since Hancock later died, Jesse Perkins has now been charged with murder. Thomas Perkins has been charged with interference with public duties, hindering apprehension and tampering with physical evidence.

The two suspects will be arraigned on these new charges and a new bond will be set at that time.

Investigators said there appeared to be no motive for the attack.

"I hope they pay for what they did," said Paul Hancock, Dessie Hancock's son. "I hope whatever the law of the land provides, I hope they receive."

Funeral arrangements for Dessie Hancock are pending.

In lieu of donations, her family is asking people to make contributions to Camp Summit in Dallas.

The camp for people with special needs held special meaning for Dessie Hancock. Her foster son has spent time there in the past.

If you'd like to make a contribution, visit the camp's website, call Pam at (972) 484-8900 ext. 104, or write to the following address:

Camp Summit

17210-W Campbell Road

Dallas, TX 75252

NBC 5's Holley Ford and Chris Jose contributed to this report.