The Phoenix firefighter community is mourning the loss of one of their own. Firefighter Brian Beck Jr., a third-generation firefighter with the Phoenix Fire Department, died Sunday after a battle with occupational cancer, according to a professional organization.

The United Phoenix Firefighters said 31-year-old Beck Jr. is the second Phoenix firefighter who died from occupational cancer this year. The nonprofit organization said Beck Jr. was an eight-year veteran of the department and mostly worked out of Fire Station 33 in north Phoenix.

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"Occupational cancer has proven to be the new epidemic we face in the fire service, far too many precious colleagues of ours have been lost to this relentless illness," a Facebook post from the organization reads.

According to a post from Brian Beck Sr., a retired Phoenix firefighter, on the Support For Firefighter Brian Beck Jr. page, his son was diagnosed with malignant melanoma cancer a year ago. 

The United Phoenix Firefighters said Beck Jr. will be "memorialized by the Phoenix Fire Department as a line of duty death."

Beck Jr. is survived by his wife and three young children, the organization said.