At least two people were killed after a vehicle ramming and stabbing attack outside a synagogue in Manchester, England, on Thursday morning. A suspect is believed to be dead, the authorities said.

The attack occurred on Yom Kippur, the holiest day in the Jewish calendar, while congregants were gathered inside the Heaton Park Hebrew Congregation synagogue.

Here’s what we know:

What happened and where?

Greater Manchester Police said they received a call at 9:31 a.m. on Thursday morning reporting that a car had been driven toward members of the public, and that several people had been stabbed.

A suspect was shot at the scene. Footage posted by witnesses on Facebook showed police officers aiming rifles at a suspected attacker on the ground outside the synagogue. The police said the attacker had been prevented from entering the synagogue because of the quick response by a witness who called the police.

Two people were killed in the attack, and the assailant was also believed to be dead, the police said. Others were injured, including three who were in serious condition on Thursday afternoon.