It seems odd that only RFA is carrying this right now, but I just saw them post an update Chinese-language version of the story, so the silence from other media outlets might be due to the media blackout in Kham:
A Tibetan bombed a newly completed government building in troubled Sichuan province that was used to gather intelligence on the local community, sources said Tuesday.
The man, identified as Tashi, aged 32, died in the explosion, succumbing to head injuries, in the incident in Rekpa village in Dege county on Saturday, the sources said.
“He died in the explosion that also damaged the building. The extent of damage on the government building is not clear,” an Indian-based friend of Tashi told RFA.
The government building was newly constructed to allow station officials to watch over residents of Rekpa and Wapa villages, angering the residents, according to Ngawang Sangpo, a Tibetan with contacts in the area.
Reports of a bombing in Chamdo a few months ago were also met with deafening silence, although Chamdo is probably one of the hardest areas for reporters to enter in all of Tibet. We’ll see what happens to this story.