Police have turned their focus to family conflicts as a possible motive behind the murder of former national sports shooter Jakkrit Panichpatikum.
Metropolitan Police Bureau (MPB) deputy chief Pol Maj Gen Chayut Thanathaweerat said investigators have ruled out drugs and the amulet trade.
He said the next step is to summon the relatives of Jakkrit's wife, Nitiwadee Pucharoenyos, for questioning.
The former sports shooter, who was involved in the lucrative amulet trade and was an alleged drug user, was gunned down last Saturday night in his black Porsche Boxster near Ramkhamhaeng Soi 166 in Min Buri district.
In July, Jakkrit was arrested for allegedly attacking and threatening his wife and his mother. He was said to be under the influence of the drugs at the time.
Pol Maj Gen Chayut said the amulet trade has been ruled out as a factor in the killing after several witnesses were questioned. The victim's business looked straightforward and problem-free.
Another MPB deputy chief, Pol Maj Gen Jitti Rodbangyang, said yesterday several amulet traders who had traded with Jakkrit had been questioned.
He said there is no evidence suggesting Jakkrit was killed as a result of his amulet trading.
Pol Maj Gen Chayut said conflicts Jakkrit had with the Shooting Association of Thailand had not been ruled out.
He said investigators will also look into a letter said to be written by Jakkrit when he was detained. The letter was said to be about his personal problems.