19-year-old Poly Sanchez allegedly shot and killed 24-year-old Walter Dani outside the Crossroads market in Gerber Wednesday. Sanchez and two other men reportedly fled the scene in a maroon sedan. Sanchez was arrested the following day. Lucio Madera was arrested Saturday for an open count of murder. Investigators also discovered the shotgun believed to be the murder weapon. Police are looking for the third suspect 19-year-old Gambino Madera.