Authorities charge man, 22, with assassination try

[AsahinaKimi]

(01-09) 17:51 PST Tucson, Ariz. (AP) --

Authorities on Sunday charged a 22-year-old man described as a pot-smoking loner with trying to assassinate Rep. Gabrielle Giffords and killing others at a political event, revealing that he had scrawled on an envelope the words "my assassination" and "Giffords."

The discoveries at his home in southern Arizona, however, provided few answers to a shocked nation, from the victims of Saturday's shooting rampage to lawmakers worried about their safety: What motivated the rampage outside a supermarket that killed six and injured 14?

http://www.sfgate.com/cgi-bin/article.cgi?f=/n/a/2011/01/08/national/w111222S57.DTL&tsp=1