The Jewish Federation of Greater Ann Arbor has raised more than $3,000 since the campaign launched Monday on the Crowdrise website. Most of the donations are between $18 and $100, many of them anonymous.
The building housing the Islamic Center of Ypsilanti, which also serves as a mosque, was destroyed in the March 11 fire.
A 16-year-old boy was identified and questioned as a suspect in the arson, as well as the arson a week earlier of a vacant house on the same block. Police do not believe the attack was a hate crime, according to reports.
The teen was released to the custody of his parents pending the filing of charges.