Hours after Marlon Lee, his common-law wife and his son were murdered in their Petit Valley home on September 9, Marlon's sister was struggling to understand who would want the family dead.

Lee, 41, Maleek Lee, 17, and Salina Rodriguez, 34, were all gunned down on Monday night at their Sita Trace off Pioneer Drive, Petit Valley home.

The trio, along with Lee's other son who was not home at the time, lived in the 20 by 20 wooden structure.

Police said around 9.36 pm on September 9, a man called and gave information about gunshots he heard at his neighbour's house at Upper Pioneer Road, Petit Valley.

When police got to the house, they found Marlon lying between the bedroom and the living room.

He had been shot multiple times and was dead.

They found Rodriguez on the bed in the same bedroom.

She was still alive and police took her to the St James Medical Complex. She died at hospital around 10.35 pm.

Maleek was found dead approximately 20 feet away from the house.

Homicide Bureau Crime Scene officers recovered 30 9mm spent shells, two live rounds of 9mm ammunition and one deformed projectile.

Marlon's sister, who asked not to be named, spoke to the media at the Forensic Science Centre, St James, on September 10.

She explained Lee's two sons were Rodriguez's stepchildren.

[caption id="attachment_1107765" align="alignnone" width="576"] Marlon Lee and Salina Rodriguez -[/caption]

Marlon's sister described him as a helpful person who was "ready and willing" to do any task given.

"He would've gone to the ends of the earth to help you."

She said while Marlon would have "little squabbles here and there," she does not understand what caused this "senseless killing.

"Even the boy (Maleek)- he of the age where he is trying to figure out his life."

She said Maleek attended Servol but dropped out because he was not "academically inclined.

"He was good with his hands. He was learning masonry.

"He was working. He was not sitting at home, just playing games."

She said he was a typical teenager who made mistakes as she said, "No one is perfect."

She said she lives a short distance away from Lee's home.

"We heard some gunshots like if someone shooting up in the air – it sounded like fireworks.

"We didn't hear nothing after and we didn't come outside."

She described Lee's other son – her nephew – not being home as lucky, as he would have also been dead.

She said her nephew called around 11 pm on September 9.

"'You see Maleek? My father dead you know.'"

She said she was shocked by his statement.

She eventually went to Lee's house and left around 2.30 am. She was unhappy with the police.

[caption id="attachment_1107764" align="alignnone" width="569"] Salina Rodriguez -[/caption]

"The officers were unprofessional. They just said they were from CID and homicide and that's it. No indication of my name is so and so (sic) and I am attached to whatever station."

She said the police told her the investigation would be difficult as they had no leads.

She said one officer showed he