Another official involved in Sichuan earthquake relief efforts has committed suicide ahead of the tragedy's one-year anniversary next month.

Feng Xiang, 33, deputy head of the publicity department in Beichuan county, took his life at home on Sunday, local police said.

The former elementary school teacher's eight-year-old son was killed in the May 12 earthquake, which resulted in at least 90,000 people being killed or missing and left close to 2 million homeless.