During his sentencing hearing, a prosecutor calls the Boston Bomber "unrepentant"

Credit: FBI/ZUMA

It was a defiant gesture.

Three months after his participation in the Boston Marathon bombing that killed 3 and injured more than 260 others, Dzhokhar Tsarnaev sat in a holding cell. Wearing an orange prison jumpsuit, he glanced at a surveillance camera. With an angry scowl, he held up his middle finger.

On the first day of the death penalty phase in the Boston Marathon bombing trial, the government showed a screenshot of that video to the jury – an attempt to emphasize Tsarnaev’s lack of remorse.

“This is Dzhokhar Tsarnaev: unconcerned, unrepentant and unchanged,” said prosecutor Nadine Pellegrini, addressing the jurors who will decide whether the 21-year-old will be executed for his role in the bombing.

The photo gave the jury its first glimpse into Tsarnaev’s mindset; he showed little emotion during trial.

“He was determined and destined to be America s worst nightmare,” said Pellegrini.

Earlier this month, Tsarnaev was found guilty of 30 federal charges related to the bombing.

The penalty phase is expected to take about 4 weeks.

Want to keep up with the latest crime coverage? Click here to get breaking crime news, ongoing trial coverage and details of intriguing unsolved cases in the True Crime Newsletter.