HOUSTON, Texas (KTRK) -- Richard Lam said his parents Bao and Jenny Lam came to the United States as teenagers with hopes of living the American dream.
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"They were working two jobs, bussing tables," said Richard Lam.
Their hard work paid off. They became entrepreneurs, owning several restaurants and properties and lived in a gated community. Their American dream had become a reality.
"Everything they did they just wanted to provide for us," said Richard Lam.
On Saturday, Richard returned home from a cruise and tried to get in touch with his parents.
"When we docked in, I started calling. The phone was going straight to voicemail," said Lam.
After he didn't get an answer, he went to their home.
"As soon as I arrived, I knew something was wrong because there were doors open through the house when I was peeking through the windows," said Lam.
Soon after, deputies arrived and discovered the couple had been killed. Sources said they were bound and tortured before they were murdered execution-style.
Investigators believe the family was targeted.
They say they were killed on Thursday around 8:40 p.m. when they were ambushed in their garage after returning home from dinner.
Lam said his parents were kind, selfless people.
"I took them for granted. I took their time here for granted," said Lam.
Now Lam said he plans to keep their legacy alive.
"I hope I continue to make them proud even after they're gone," said Lam.