Protesters took to the streets of Mogadishu on Sunday, where the death toll from what’s being called the country’s worst-ever bomb attack had reached 276.

Over 300 people were also wounded, stoking fears the death toll could rise even higher. The Somali government blamed al-Shabab; the extremist group has yet to claim responsibility.

“Analysts thought the latest attack might have been in retaliation both for the loss of territory and for increasing American drone attacks since Mr. Trump loosened restrictions meant to strictly limit civilian casualties,” the New York Times reports.

The twin blasts took place Saturday. A truck bomb exploded in a busy commercial district with a second car bombing in the Medina district hours later.