The state fire marshal's office is investigating an early Sunday blaze that has forced a library in Auburn to close indefinitely.
The Auburn Fire Department responded to the Eckhart Public Library about 2:30 a.m. for a fire alarm in the building, 603 S. Jackson St., Chief Michael VanZile said.
Smoke was showing upon arrival, he said, and firefighters extinguished the first-floor fire within minutes.
The first floor sustained extensive damage with the basement and second floor sustaining smoke and heat damage, he said.
In an update online Sunday, the library announced the main library will be closed indefinitely. It houses adult fiction and nonfiction, the children's department, movies, audiobooks, public computers and other resources, according the library's website.
The post indicated the fire happened on the 1996 expansion side of the building.
VanZile said the cause of the fire wasn't known Sunday. No injuries were reported.
The main library is one of four buildings on the Eckhart Public Library Campus. The teen library and the Willennar Genealogy Center were expected to remain open, the update said.
It also noted the historic fountain wasn't damaged but wasn't running because water and electricity had to be shut off.
The library said it will post updates on Facebook, Twitter and Instagram and will send emails when possible.
"We thank the community for all their support during this time," the post said, "and we hope to let you know when we will reopen soon."