LOS ANGELES—The man suspected of fatally stabbing a 24-year-old UCLA graduate student in the Hancock Park boutique furniture store where she worked was arrested on Jan. 19 in Pasadena. Pasadena Police Lt. William Grisafe confirmed the arrest of Shawn Laval Smith, 31, to City News Service. A short time later, the Los Angeles Police Department (LAPD) announced the arrest was made at 11:50 a.m. near Fair Oaks and Colorado Boulevard. Smith is suspected in the killing of Brianna Kupfer of Pacific Palisades, who was found dead inside Croft House in the 300 block of North La Brea Avenue at about 1:50 p.m. Thursday. LAPD Lt. John Radke said on Tuesday that Kupfer was alone in the store when she was attacked. “At 1:36 p.m. in the afternoon, Brianna was working in the store all by herself,” Radke said. “She sent a text to a friend letting her know that there was …