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University of Michigan students stand outside the Sigma Alpha Epsilon house in Ann Arbor with their belongings after an early morning fire forced them out on Saturday, Feb. 8, 2014. Patrick Record | The Ann Arbor News.

(Patrick Record | The Ann Arbor News)

Four people were taken to University of Michigan hospital with unknown injuries after a fire tore through a fraternity house in the 1400 block of Washtenaw Avenue in Ann Arbor, officials said.

Crews from the Ann Arbor Fire Department were called to the blaze at 5:37 a.m., according to a release.

Firefighters rescued 20 residents from the building and four of them were taken to the hospital with unknown injures, the release said.

The fire was contained to the front area of the building, but there was smoke damage on all floors. Crews had the blaze under control in about 20 minutes, according to the release.

As of 9 a.m., roads were still closed in the area and fire crews were still at the scene, according to Ann Arbor police.

Fire and police agencies from Pittsfield Township, Ypsilanti, Ypsilanti Township, Superior Township, Ann Arbor and the University of Michigan all assisted.

No firefighters were injured, the release said.

Police said the Red Cross was called to the scene to help with the displaced residents.

John Counts covers crime and breaking news for The Ann Arbor News. He can be reached at johncounts@mlive.com or you can follow him on Twitter. Find all Washtenaw County crime stories here.