PORTLAND, Ore. – A 30-year-old man has been arrested for an assault that occurred during a protest at Portland International Airport on Jan. 29.

James Alan Krane was arrested on charges of fourth-degree assault. He was booked at the Multnomah County Jail and then released.

Port of Portland police did not say who Krane allegedly assaulted.

During a Jan. 29 protest at PDX against President Donald Trump's initial travel ban, a counter-protester was assaulted.

More: Counter-protester assaulted at Portland airport rally

Grant Chisholm was hit in the head and hospitalized for two days.

In the days following the assault, Portland activist Jessie Sponberg claimed he had a role in the assault and turned himself into Port of Portland police, who did not arrest Sponberg because they were not convinced he was the person who punched Chisholm.