Moorhead firefighters were called to a four plex at the corner of Ninth Avenue and Ninth Street South in Moorhead Friday morning. Carrie Snyder / The Forum

The Moorhead fire department was called to respond to a blaze at a four plex on the corner of 9th Avenue and 9th Street south.

Moorhead had assistance with the fire from neighboring Dilworth Fire Department.

Moorhead Fire Chief Joel Hewitt told a Forum reporter that his crew had some initial difficulty in opening a hydrant and that the cause of the fire is still under investigation.

The Minnesota state fire marshall will come to investigate the scene.

Currently there have been six deaths reported in Minnesota this year in comparison to four in 2009 according to the Minnesota Department of Public Safety.