Yale University has warned its students and staff it remains on lockdown and they should continue to "shelter in place" if on campus.
"IF OFF CAMPUS, STAY AWAY", the university's website warns.
More top news
The 20-year-old was found fatally wounded on Roth Walk, near Finsbury Park, north London at around 3am on Saturday, Scotland Yard said.
Daniel Cowell has been jailed for five years and four months after ramming a police patrol car with a stolen transit van.
The OPCW have left the site of the suspected chemical weapons attack in Douma and should have results in about a week, ITV News understands.