Gordon's brother was picked up by the police about 6 p.m. Saturday and was yesterday still being interviewed in connection with the murder.
Police state that there was an ongoing feud between the siblings and it was a family member who provided the breakthrough in their investigations.
A number of persons wept openly on hearing about the death of 'Farmer Greg', as Gordon was affectionately called.
"This is really painful to me, why would anyone want to kill him as he is a hard-working person and don't deserve this type of treatment,'' remarked Andrea Brown, a resident of Watson Grove.
Gordon was considered to be a generous person as, even in his distress, he donated some of his pigs towards assisting the Mill Bank truck tragedy in Portland.
Gordon came to prominence in 2008 after he pleaded with Government to assist him with relocating his farm after suffering through acts of praedial larceny.
The Government donated the plot of land on which he was later killed.