Police said the man who set himself on fire Tuesday afternoon at the downtown Des Moines Library has died.

It happened just before 2 p.m. at the library at 1000 Grand Avenue.

Officials evacuated and closed the library.

Police said the 36-year-old man poured an unknown liquid on himself and then set himself on fire. Library staff used a fire extinguisher and put out the flames.

The man was taken to a local hospital and eventually flown to the University of Iowa Hospitals Burn Unit in Iowa City.

He died around 6:20 p.m. Tuesday, authorities said.

The Des Moines Library announced on social media that it will remain closed until further notice.