Roommate: No warning signs before deadly church attack


              Erica Triplett, right, an office manager for Dr. John Cheng, is emotional as she reads a statement outside their office building on Tuesday, May 17, 2022, in Aliso Viejo, Calif. Cheng, 52, was killed in Sunday's shooting at Geneva Presbyterian Church. At left is Crystal Cole, an executive assistant who worked with Cheng, and Johnna Gherardini, executive director of South Coast Medical Group, where Cheng worked. (AP Photo/Ashley Landis)
            
              Johnna Gherardini, executive director of South Coast Medical Group, speaks to reporters outside her office building, where Dr. John Cheng worked, on Tuesday, May 17, 2022, in Aliso Viejo, Calif. Cheng, 52, was killed in Sunday's shooting at Geneva Presbyterian Church. (AP Photo/Ashley Landis)
            
              Gabe Kipers, a neighbor of Dr. John Cheng, kneels at a memorial for him outside his office building on Tuesday, May 17, 2022, in Aliso Viejo, Calif. Cheng, 52, was killed in Sunday's shooting at Geneva Presbyterian Church. (AP Photo/Ashley Landis)
            
              Gabe Kipers, a neighbor of Dr. John Cheng, kneels at a memorial for him outside his office building on Tuesday, May 17, 2022, in Aliso Viejo, Calif. Cheng, 52, was killed in Sunday's shooting at Geneva Presbyterian Church. (AP Photo/Ashley Landis)
            
              Gabe Kipers, a neighbor of Dr. John Cheng, kneels at a memorial for him outside his office building on Tuesday, May 17, 2022, in Aliso Viejo, Calif. Cheng, 52, was killed in Sunday's shooting at Geneva Presbyterian Church. (AP Photo/Ashley Landis)
            David Chou appears on a remote feed before Judge Cynthia M. Herrera, Tuesday, May 17, 2022, in Santa Ana, Calif., to be arraigned on capital murder and other charges for the shooting at Geneva Presbyterian Church in Laguna Woods earlier in the week. (Frederick M. Brown/Daily Mail.com via AP, Pool) Defense attorney Tania Vallejo speaks during David Chou's appearance before Judge Cynthia M. Herrera in a Santa Ana, Calif., court on Tuesday, May 17, 2022, to be arraigned on capital murder and other charges for the shooting at the Geneva Presbyterian Church in Laguna Woods earlier in the week. (Frederick M. Brown/Daily Mail.com via AP, Pool) Orange County Deputy District Attorney Jennifer Walker speaks during an appearance for David Chou, who appears remotely before Judge Cynthia M. Herrera in Santa Ana, Calif., on Tuesday, May 17, 2022, to be arraigned on capital murder and other charges for the shooting at Geneva Presbyterian Church in Laguna Woods earlier in the week. (Frederick M. Brown/Daily Mail.com via AP, Pool) Flowers sit outside crime scene tape at Geneva Presbyterian Church on Tuesday, May 17, 2022, in Laguna Woods, Calif. A shooting at the church on Sunday left one dead and five injured. (AP Photo/Ashley Landis) Crime scene tape surrounds Geneva Presbyterian Church on Tuesday, May 17, 2022, in Laguna Woods, Calif. A shooting at the church on Sunday left one dead and five injured. (AP Photo/Ashley Landis) A man places flowers at a memorial honoring Dr. John Cheng sits outside his office building on Tuesday, May 17, 2022, in Aliso Viejo, Calif. Cheng, 52, was killed in Sunday's shooting at Geneva Presbyterian Church. (AP Photo/Ashley Landis) A man places flowers at a memorial honoring Dr. John Cheng sits outside his office building on Tuesday, May 17, 2022, in Aliso Viejo, Calif. Cheng, 52, was killed in Sunday's shooting at Geneva Presbyterian Church. (AP Photo/Ashley Landis) Orange County District Attorney Todd Spitzer speaks during a news conference on Tuesday, May 17, 2022, in Santa Ana, Calif. Spitzer gave an update on the criminal charges in Sunday's shooting at Geneva Presbyterian Church. (AP Photo/Ashley Landis) Jason Aguilar, left, a senior pastor at Arise Church, comforts Billy Chang, a 67-year-old Taiwanese pastor who survived Sunday's shooting at Geneva Presbyterian Church, during a prayer vigil in Irvine, Calif., Monday, May 16, 2022. Authorities say a Chinese-born gunman was motivated by hatred against Taiwan when he chained shut the doors of the church and hid firebombs before opening fire on a gathering of mainly of elderly Taiwanese parishioners. (AP Photo/Jae C. Hong) 
              In this photo released Monday, May 16, 2022, by the Orange County Sheriff's Department is David Chou. Authorities said Chou, the gunman in Sunday's deadly attack at a Southern California church, was a Chinese immigrant motivated by hate for Taiwanese people. Chou was booked on one count of murder and five counts of attempted murder. (Orange County Sheriff's Department via AP)