Five people in Qing'an county, Heilongjiang Province have been arrested for the death of a local disciplinary inspection official, who was allegedly beaten to death after he went to Beijing to report discipline violations of senior county officials, media reported Sunday.

Fan Jiadong, 46, the disciplinary inspection official, was allegedly beaten by a group of masked people on April 2 in Qing'an. Fan died of complications from his bone injuries on May 1.

Two of the five suspects were connected to a real estate development company in Qingan, which has close ties with the local government, according to news website caijing.com.cn.

The magazine previously reported that Fan's most recent appeal to the top disciplinary watchdog accused the county's Party chief and county head of their alleged involvement in the illegal construction of a deluxe office building after the central government issued a five-year ban on new office building construction.