(CNN) — [Updated 2:04 p.m. ET]
Connecticut State Police have issued an alert for another vehicle, saying a suspect in the Boston Marathon attack now could be in a 1999 green Honda Civic with Massachusetts license plate number 116 GC7. The CSP cited Boston authorities.
Connecticut police issued a similar alert earlier today for a different vehicle; that vehicle eventually was found unoccupied Friday in the Boston area, Boston police said.
[Updated 1:51 p.m. ET]
More details on the Tsarnaev brothers:
Dzhokar Tsarnaev, 19, the Boston Marathon attack suspect now at large, came to the United States on July 1, 2002, at age 8 on a tourist visa, a federal source said. While here, he sought asylum and became a citizen on September 11, 2012.
His older brother Tamerlan Tsarnaev, who was killed in a shootout with police overnight, came to the United States four years after his brother, on September 6, 2006, at the age of 20, the source said. He came legally but was not naturalized. He was a green card holder and in the country lawfully.
[Updated 1:23 p.m. ET]
Dzhokar Tsarnaev became a U.S. citizen on September 11, 2012, a federal official said Friday.