UPDATED: Explosions Mar End of Boston Marathon – 3 Dead, More than 140 Injured

A day of celebration turned into tragedy and chaos as two explosions rocked the area around the finish line of the Boston Marathon. The explosions caused at least three deaths and injured more than 140 people, scattering crowds near the finish line, authorities said, according to the Washington Post.

Several victims, including an 8-year-old boy who died, were children. Boston Childrens Hospital reported that those treated there included a 9-year-old girl, a 7-year-old boy, a 12-year-old, and a 2-year-old, the Boston Globe reported. 

CNN reported that authorities halted the race. Initial reports of a third explosion, at the John F. Kennedy Library, turned out to be an unrelated fire, according to the Washington Post.

According to the Boston Athletic Association website, five people registered for the race from Mill Valley.

Mill Valley:

• Fast, Spencer – Finished 3:15:33, 4,836 place. Wife confirmed he is safe
• Guzman, Shanna – Finished 4:01:54, 16,355th place
• Katsin, Daniel – Louise Lucha wrote on the Mill Valley Patch Facebook page: "Daniel Katsin was registered but did not race this year."
• Lepelch, Patrick – In a comment on Mill Valley Patch, Patrick wrote: "I didn't run in the race due to injury. This is a sad day indeed. Patrick"
• Wagner, Erin – Finished 4:01:38, 16,310 place

Former San Anselmo-Fairfax Patch editor Kelly O'Mara, a resident of San Rafael, said she had dropped out of the race, was dropped off by a bus near the finish line, gotten changed and walked away from the area before the explosion and didn't hear the explosion.

"There was just so much other crowd noise going on anyway," she said.

O'Mara was sending tweets from scene shortly after the explosion. 

"Getting away from finish area after explosions at #BostonMarathon. Sounds and looks really bad," she wrote. "The streets are filled with people trying to figure out where to go or what to do, traffic is stopped and the subway is shut down."

It's likely that others from the city travelled out there to give them support. Patch will continue to report this story as it develops and bring news about our local runners as we hear more.

If you know anyone of these people, please encourage them to email Patch at millvalley@patch.com or reach out to family members. The numbered injured or any casualties have not been released.

Here are the other registered Boston Marathon entrants from Marin:

There is no confirmation at this time about what may have caused the explosion. In a statement issued from the White House, President Barack Obama promised that "we will find out who did this and we will hold them accountable. We don’t yet have all the answers. We still do not know who did this or why."

If you know anyone of these people, please encourage them to email Patch at millvalley@patch.com or reach out to family members. 

To assist with the search for participants, Mountain View-based Internet giant Google has set up a website in which individuals can search for their loved ones or let everyone know they're safe.

Here are the other registered Boston Marathon entrants from Marin and their finishing times and place if they finished the race:

Corte Madera:

• Donnelly, Heather
• Evans, Sarah – Finished 3:58:25, 15,755th place
• Howland, Jeri

Larkspur:

• White, Ned – Finished 3:15:51, 4890th place

Novato:

• Olson, Tom
• Tara, Roopinder – Finished 4:31:07, 17,556 place
• Walker, Barbara – Finished 3:48:24, 13,429th place
• Willey, Mike - Finished 3:27:41, 7,784th place

San Rafael:

• KellyO'Mara, 27 – Did not finish but is OK.
• SusanKreusch, 50 – Finished 3:52:57, 14,515th place 
• Andrew Valla, 41 – Finished 3:08:02, 3,369th place
• Alex Varner, 27 – Finished 2:21:40, 26th place
• Xiaodong Yang, 58 – Finished 4:05:13, 16,784th place

Ross Valley:

• Johnson, Kathy (San Anselmo) - Kathleen Doney wrote on the San Anselmo – Fairfax Patch Facebook page that Kathy Johnson "was not hurt."
• Carr, Sarah (Ross)
• Karnazes, Dean (Ross) – Finished 3:27:56, 7,858th place
• Yew, Jenny (Ross) – Finished 3:44:38, 12,526th place
• Roberts, Wendy (Kentfield)

Sausalito:

• Simonich, Michael – Finished 3:18:22, 5,453rd place
• Stephens, Eve
• West, Molly

Tiburon:

• Canady, Richard
• Kress, Olivia – Finished 3:42:43, 12,006th place
• Norris, Joy – Finished 3:47:11, 13,115th place
• Zicko, Tatyana – Finished 3:23:42, 6,737th place