Charleston, SC – West Sacramento Police Department Officer Rinaldo “Monty” Monterrosa died in his hotel room while attending an out-of-state training on Dec. 15, following a yearlong battle with lymphoma.

Officer Monterrosa, an Army veteran who served the West Sacramento Police Department for 11 years, had just returned to work after successfully beating cancer, and was attending a police training in South Carolina, KOVR reported.

While in the area, he also traveled to Charleston to attend a military graduation ceremony for a friend’s family member, and was staying at an Embassy Suites hotel when he passed away.

West Sacramento Police Department (WSPD) spokesperson Eric Angle said that Charleston police believe Officer Monterrosa, 42, died of natural causes, and they are continuing to investigate the incident, The Sacramento Bee reported.

“As a department, we are profoundly sad that we must share the news of the death of one of our beloved officers,” the WSPD said in a press release. “So many of you reached out when he first learned of his cancer.”

“We know that you will once again be sending prayers and kind thoughts during this difficult time. All of those gestures meant a tremendous amount to Monty,” the agency added.

The department said that Officer Monterrosa would be remembered for the “great relationships” he built and “significant impact” he made throughout the city.

“On behalf of your WSPD family…thank you Monty—for all that you gave to everyone you served over your impactful life,” the statement read. “You were truly a gift to those who had the pleasure to work alongside you. You are incredibly loved by your family, community and department. You will be missed my friend.”

Officer Monterrosa leaves behind his wife and four children, “all of whom he spoke of often, and clearly loved so much,” according to his department.

He will be laid to rest on Friday, KOVR reported.

Our thoughts and prayers are with the family of West Sacramento Police Department Officer Rinaldo “Monty” Monterrosa, both blood and blue. Thank you for your service.

Rest easy, hero. We’ll hold the line from here.