Abdul El-Sayed, the Democratic nominee for U.S. Senate in Michigan, has apologized to the state's Jewish Democratic Caucus.

The Michigan synagogue that came under attack this week when an armed man drove his car into the building had for months been strengthening its security apparatus.

A Lebanese-born man who had learned a week earlier that four of his family members were killed in an Israeli airstrike in his native country, waited in his car outside a Detroit-area synagogue for two hours before ramming into the building.