Reuben Kipkulei, 38, was beaten on Tuesday last week at Kapchepkisa village, Baringo North Sub-county.
According to his family, the attackers were ordered by the elders to 'discipline the man' for being disorderly.
"He succumbed to the injuries on Thursday night, his body is starting to decompose," his young brother Alfred Kipkulei told the media on Sunday.
Kipkulei said the irate youths threatened to beat him up when he tried to save his brother.
"They said they already had a go-ahead from the elders and so if I dare block them they will kill me," Alfred said.
His mother Priscah Kobilo said she was also threatened and chased away when he dared to rescue her son.
"I saw how they were beating him up, they lashed him with sticks and rained blows upon him," she said.
She said she found his lifeless body lying in his house on Friday morning when she went to serve him breakfast.
According to a Tugen elder Joseph Chepchieny Temwo ,70, a slight beating is allowed in the community on a wrongdoer.
Another brother to the deceased Jackson Toroitich condemned the police for not bothering to collect the body.
He said no arrest had been done despite the culprits being well known to the family.
"Even the area chief Nicolas Kibowen living some 100metres away is yet to witness the incident, this is so, unacceptable," said Toroitich.
He said his brother had not fallen sick before and had never engaged in any crime before.
-The Star