CNN Correspondent Deborah Feyerick and Fox News' Sharman Sacchetti have tweeted:
#Tsarnaev trial is likely to take 3-4 months. His demeanor is almost nonchalant. He turns away from the judge to look at his relatives.
Trial expected to last three to four months, 80-100 witnesses
More top news
Showers blowing in from the West across Wales, Northern Ireland and Scotland. Largely dry with a few bright spells across central areas.
A man is facing jail for killing his toddler son by force-feeding until he "drowned in his food"
The quartet are to work on a 'ground-breaking' project with former Spice Girls manager Simon Fuller.