STA. ROSA CITY, LAGUNA: Police on Wednesday the suspect in the killing of Zenaida Sison, mother of actress Cherrie Pie Picache. Police chief Supt. Pergentino Malabed Jr. identified the suspect as Michael Flores, 29, single and a resident of No. 7 Sitio Maligaya 2, Barangay San Vicente, San Pedro, Laguna. Malabed said they received a call from a concerned citizen at about 11:30 p.m on Tuesday that the suspect was seen at Garden Villas 3 Subdivision in Barangay Malusak in this city.