Council Leader Cllr Bev Craig has issued a statement.
Council Leader Bev Craig said: "We are all horrified by this shocking and reprehensible attack on members of Manchester’s Jewish community, on their holiest day.
"Our thoughts are with those who have been killed and seriously injured, their loved ones and with everyone who has been affected by this awful incident.
"We have been supporting our local community throughout the morning and offer our full support and love.
"We will be working Greater Manchester Police, Greater Manchester Combined Authority and our local communities in the hours ahead to offer support and reassurance. Manchester stands with our Jewish community at this darkest of moments, and will come together as a city."