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MANILA (UPDATE)—President Rodrigo Duterte on Tuesday visited the wake of his friend and political ally, former senator Aquilino "Nene" Pimentel Jr., who died Sunday after being hospitalized for pneumonia.

ATM: @PDPLABAN Chairman President Duterte paying his last respects to his beloved partymate & friend Sen. Nene Pimentel.#tatayNene pic.twitter.com/niP3mcJfcd

— Ron Munsayac (@RonMunsayac) October 22, 2019

Duterte is coming off a trip from Japan that was cut short because he was experiencing "unbearable pain," which was apparently brought about by a motorcycle spill last week.

After his plane touched down at Villamor Air Base in Pasay City, Duterte and his entourage motored to Heritage Memorial Park in Taguig City, site of Pimentel's wake.

Ron Munsayac, the PDP-Laban party spokesperson, shared photos of Duterte at the wake.

Pimentel was the founder of PDP-Laban. The party's current president is his son, Sen. Koko Pimentel, while Duterte is its chairman.

Pimentel, who was a fierce critic of former strongman Ferdinand Marcos, was also an advocate of federalism for the Philippines, which Duterte is also pushing for.

Pimentel's remains will be brought to the Senate office in Pasay City on Wednesday, Oct. 23. It will be flown to Cagayan de Oro on Friday, Oct. 25, where a funeral service will be held in Cagayan de Oro City Hall.

His remains will be returned to Heritage Park and will be laid to rest on Saturday, Oct. 26.

The democracy icon is survived by his wife and 6 children, including Koko Pimentel and human rights commissioner Gwendolyn Pimentel-Gana.