You can find photos from 6x07 (Great Red Dragon) below and they contain spoiler:
http://www.spoilertv.com/2013/11/the-mentalist-episode-607-great-red_11.html

Especially the last photo is interesting:

***SPOILER***

Jane is in the hospital so three things comes to my mind:
1- It wasn't Jane who exploded his house and he had a narrow escape.
2- One of the suspects shot Jane but he managed to escape.
3. For an unknown reason, Jane shot himself not to be seen as a suspect.

***SPOILER***