Raisa Ivette Quiles, 22, was killed in a Milwaukee apartment shortly before 4 a.m. on October 31, 2010. The death followed a dispute that reportedly began after a financial transaction for sex between Quiles and a man named Uriel Pucheta-Crispin. A neighbor told police he had heard an argument about a gun and that Pucheta-Crispin later knocked on his door to confess to killing Quiles; the neighbor then saw her body on a bed in the adjacent unit. The Milwaukee County medical examiner’s autopsy ruled the cause of death strangulation.

The incident continued when another man, Rafael Callazo, arrived at the apartment; Pucheta-Crispin allegedly stabbed Callazo in the back, and Callazo survived. Authorities later charged 33-year-old Uriel Pucheta-Crispin with first-degree reckless homicide in Quiles’s death and attempted first-degree intentional homicide for the attack on Callazo, and a warrant was issued after he was not in custody.

Did anyone in the neighborhood or who knew Raisa hear or see anything around that early morning that might help explain how the argument escalated?