Millionaire businesswoman's murder blamed on family

The source said Pol Maj-General Piyachart Nerngchamnong also cited a conflict his late wife had with someone close to her.

"Apart from these possible motives, I see no other reasons for her murder," he said.

Police have released a sketch of two hooded men as per accounts provided by people who witnessed the shooting last Sunday night. The officers are currently interviewing other witnesses who saw two mysterious men camped out in a wood not far from Sunattee's home two weeks before the murder and are working on a new sketch based on the latest information.

The two men had allegedly set up a hammock and were often seen resting in it before the shooting. However, they have not been seen since. Police believe one was a gunman and the other an accomplice, and are hoping the new sketches taken from the latest accounts would depict the two suspects more clearly.

Samut Prakarn's Rachathewa police station is joining hands with officers from the Udomsuk police station as well as detectives from the Metropolitan Police Division 4 to help solve the case. Sunattee is known to have filed several complaints with Rachathewa police accusing many people of various crimes and of receiving murder threats.

Apart from the 23 criminal and civil lawsuits she had lodged so far, police learned that she had filed another four criminal and two civil lawsuits at the Phra Khanong District Court in 2007.