DETROIT — Metro Detroit mosques have been receiving hate mail from unknown senders in the past few weeks. The most recent mail was sent to a mosque in Detroit.

The flyers were of hateful disturbing images, labeling Muslims as terrorists. Another local mosque received a package of a Qur'an smeared with feces.

The Council on American Islamic Relations (CAIR) reported the hate mail to the U.S. Postal Service which is attempting the track down the senders.

Until the sender is located, CAIR is urging mosques and Muslim organizations to be careful when opening mail without a return address.