LOS ANGELES (KABC) -- The Los Angeles County Board of Supervisors voted Tuesday to renew a $20,000 reward to find the suspects who stabbed a couple to death in their Diamond Bar home.
The original reward was set to expire Sunday and the renewal extends the offer for at least another 90 days.
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David Cheng Wang, 60, and his 57-year-old wife, Marian Mei Chung, were found dead in their home in October.
Police believe they were killed during a robbery.
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The city of Diamond Bar is also offering a $10,000 reward.
Anyone with information was asked to call sheriff's homicide Detectives Margarita Barron or Dameron Peyton at (323) 890-5500.
Authorities investigated at a home in Diamond Bar after a man and woman were found stabbed to death on Thursday, Oct. 20, 2016. (KABC)