More details have emerged about the capture of the second Boston Marathon bombing suspect Dzhokhar Tsarnaev, 19, which occurred Friday evening in a residence in Watertown, MA.

Tsarnaev reportedly bled for hours from the neck and leg wounds before he was arrested, according to CBS News correspondent John Miller. He "might not have lived" if not found, media speculates.

When he was arrested he was bleeding badly and "too weak to resist any longer," officials told ABC News. Police believe he was intitially wounded Thursday night and according to many reports, he may have been bleeding for at least 20 hours.

The primary focus of authorities now is to interrogate him and find out if he planted any other explosives before his capture or whether he plotted with others to do so, according to an official that spoke to NBC News.

Tsarnaev was found by a neighbor hiding in a boat in the backyard of a Watertown, MA residence Friday evening. The neighbor had stepped out from his house after authorities lifted the ban in the neighborhood when he spotted that the rain cover of his boat was distorted. When he looked inside he discovered the suspect who was bleeding and informed police.

Tsarnaev will not be given a Miranda warning, instead the government will request a "public safety exception," a legal rule that enables investigators to question him without first advising him of his right to remain silent and to be afforded legal counsel.

Authorities will proceed with the interrogation of the suspect. In an address to the nation Friday night, President Barack Obama said that many questions remain unanswered. Among them "Why did young men who grew up and studied here, as part of our communities and our country, resort to such violence?"

"How did they plan and carry out these attacks, and did they receive any help?" Obama asked as he ordered the FBI and Department of Homeland Security to deploy "all the necessary resources" to investigate the suspect.

"We will determine what happened. We will investigate any associations that these terrorists may have had. And we'll continue to do whatever we have to do to keep our people safe," Obama said.

Tsarnaev's older brother, Tamerlan, 26, the first suspect in the bombings, was killed in the early hours of Friday. Pictures of his corpse were leaked online Friday night.

Watch the first image of Dzhokhar captured Friday night below: