You’re welcome..
oston.com: Update, 8:25 p.m.: Boston Police David Estrada confirms that an adult male suspect was detained and is being questioned by police.
The man, whose identity has not yet been disclosed by authorities, was apprehended at Boylston and Exeter Streets.
Estrada said he was unable to confirm whether one or two bags were found at the scene. VIDEO is at http://www.boston.com/news/local/massachusetts/2014/04/15/breaking-marathon-finish-line-evacuated-after-suspicious-packages-discovered/DTSiAn2NlNQe3honPF97uO/story.html
Photo pulled of person of interest (poi) from your link raccoon.
Police detonated backpack(s?) about twenty minutes ago.