A 36-year-old Burnaby, B.C., man has pleaded guilty to killing his wife, whose body was found in a suitcase in the Fraser River last year.

The RCMP say Zhongming "James" Mou admitted to second-degree murder in the death of 27-year-old Yating "Lancy" Hu in B.C. Supreme Court in New Westminster Tuesday.

Mou was initially charged with first-degree murder.

Hu's body was found in the Fraser River off Richmond in August of 2011.

She vanished a month earlier and Mou gave police conflicting stories about her disappearance.

The couple had two young children, who are now in the care of their grandparents.