A cascade of increasing tensions after a campus forum on race at Kansas University last week continued Sunday, with an online petition calling for the resignation of three student leaders. But a recent KU graduate who began a hunger strike Friday in solidarity with various student groups appeared to have abandoned his post on campus.

A group calling itself the Jayhawk Alumni Solidarity Group posted the petition, “An Open Letter From KU Alumni Calling for the Resignation of Top Student Senate Executive Officers,” on Sunday evening. By 10 p.m., it had about 160 signatures. Echoing action taken Friday evening by KU’s Student Executive Committee, the petition calls for the resignation of current KU Student Body President Jessie Pringle, Student Body Vice President Zach George and Chief of Staff Adam Moon by 5 p.m. Wednesday.

“We, the undersigned students and alumni of the University of Kansas, have witnessed and experienced racism on campus,” the petition reads.

It also advocates for 15 diversity-related demands made at Wednesday’s forum by student-led group Rock Chalk Invisible Hawk, which has become central to the debate that has followed.

Meanwhile, John Cowan, a 2014 KU graduate who began protesting Friday at Wescoe Beach, could not be found at that location or anywhere else on campus as of 8:30 p.m. Sunday, and multiple attempts to contact Cowan were unsuccessful.

Cowan told the Journal-World on Saturday that he would “die or go to the hospital” if the activist groups’ demands were not met or if a plan of action were not issued by KU. University officials have told Cowan he is allowed on campus as long as he isn’t sleeping there, he said.

KU Chancellor Bernadette Gray-Little said in a message to campus Friday that her administration will begin sharing information this week about how KU will move forward on the issue of racism.