A Miami man has accepted responsibility for a tragic crime that occurred in 2012. Alberto Sierra, 42, pleaded guilty to multiple charges, including three counts of first-degree murder. The victims were his wife and her two young daughters.

The guilty pleas were entered in a Miami-Dade County courtroom. Sierra's responses to the judge's questions were brief, indicating his readiness to make the decision and stating his guilt. Further details about the case are available from the source.

The prosecution's account of the events and Sierra's confession to detectives in 2012 provide more information about the circumstances surrounding the crime.