DETROIT - Syncora Guarantee Inc., which insures municipal bonds, on March 28 filed a request in the U.S. Bankruptcy Court for the Eastern District of Michigan seeking an order directing the bankrupt City of Detroit to produce documents related to the sale of art assets housed in the Detroit Museum of Arts as well as the potential sale of other assets such as the city's airport (In Re: City of Detroit, No. 13053846, Chapter 9, E.D. Mich. Bkcy.).