Two siblings who were convicted of murder and sentenced to prison two years ago had their sentence upheld by the court of appeals in Phnom Penh on Friday.

Chan Srey Mom, 26, was arrested in 2010 and charged with murder after allegedly poisoning her husband’s food.

Her brother, Chan Soeun, attempted to file an appeal soon after her conviction and was subsequently charged as an accomplice to the murder.

Both were sentenced to 18 years in prison.

Soeun Chanthy, the wife of Chan Soeun, said on Friday that she would appeal to the Supreme Court and Prime Minister Hun Sen in an attempt to obtain justice for her husband and sister-in-law, whom she claims is innocent.

She said that both suspects were set up by Chan Srey Mom’s mother-in-law, Yean Phandy, who accused them of the murder in 2010 because she allegedly desired to take ownership of her son’s land after his death.

“Chan Srey Mom refused to [turn over the land] and that is why she was accused by [Yean Phandy]” she said.