The University of California Santa Barbara plans to hold a “day of mourning and reflection” for the six victims slain in a murderous rampage. A memorial service will be held at Harder Stadium at 4 p.m. on Tuesday.

“This is a period of mourning for all of us,” UCSB Chancellor Henry Yang and interim executive vice chancellor Joel Michaelsen wrote in a letter to the school community posted Sunday on the school’s website. “The moving candlelight vigil that our students organized on Saturday evening began the process of healing. On Tuesday we will remember and honor the victims of this horrible event and come together as an academic community to reflect, talk with each other and think about the future.”

Elliot Rodger, 22, allegedly planned and executed a spree of murders on the university’s campus on Friday night. His roommates—Cheng Yuan Hong, George Chen and Weihan Wang—were stabbed to…