The United States returned Wednesday dozens of ancient artifacts that had been smuggled out of Egypt by an international criminal network, US Immigration and Customs Enforcement (ICE) said.

The items -- including a Greco-Roman style Egyptian sarcophagus discovered in a Brooklyn garage in 2009 -- were handed back to the Egyptian government at a ceremony in Washington.

"To think that some of these treasured artifacts were recovered from garages, exposed to the elements, is unimaginable," said ICE director Sarah Saldana in a statement.