Police say Pablo Colon Jr., 35, shot his wife, 36-year-old Sandra Colon, and one of their 3-year-old twin daughters with a handgun in a home they rented in the 1600 block of Southwest 156th Avenue shortly before 8:30 p.m. Sunday. Police said he also shot his mother-in-law, 61-year-old Olga Alvarez, and then shot himself.