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Over the past several hours, national and local news outlets have responded with a range of coverage following a pair of shootings at Virginia Tech University this morning, the deadliest such incident in U.S. history.

CNN ran several amateur photos and videos from I-Reports, its recently-launched citizen journalism initiative. One video features graphic audio of gunshots. We'll continue to update this report and the following links to coverage throughout the afternoon.

And click here to see more resources from the Poynter faculty.

Link added 12:10 p.m.

See collection of articles on Romenesko, under "Virginia Tech student Albarghouti becomes CNN's 'I-reporter' "

Link added at 11:05 a.m.

A collection of past school-related shootings: Canadian Broadcasting Corporation

Links added at 8:30 p.m.

Timeline of college campus shootings: The Chronicle of Higher Education

Continuous updated coverage several first-person accounts: BigLickU, social network for college students created by The Roanoke Times

Photo essay, user-generated photos and video reports including a personal account from a student whose classmate played dead to avoid being shot:  Fox News

Timeline and blog updates: USA Today

Audio interview with reporter and blog updates: The New York Times

Audio interview with a professor, live radio reports, live Q&A with student-produced blog Planet Blacksburg editor: Washingtonpost.com

College violence trends and shootings fact sheet: WAPT- 16 ABC Jackson, Mississippi

User-generated report from Brock Meeks, former chief Washington correspondent for MSNBC: Now Public

Official press release and podcast: Virginia Tech

Student-produced blog report from campus: Planet Blacksburg, local blog maintained by a Virginia Tech media studies class

Timestamped updates and map of shootings: The Collegiate Times, student newspaper at Virginia Tech

User-generated report: Wikipedia

Student-produced tribute: Facebook

Live coverage, video with audio of gunshots: WSLS-TV 10, NBC affiliate, Roanoke, Va.

Raw video, special report, press conference: WDBJ-TV 7, CBS affiliate, Roanoke

Timestamped updates, maps, message board: The Roanoke Times (E&P's republication of The Roanoke Times blog-style coverage)

Raw video: WAVY-TV 10, NBC affiliate, Portsmouth, Va

Audio accounts from students, live coverage, video reports, photos: MSNBC

Video Reports: ABC News reports