Karen Read Trial: Defense Alleges Cover-Up in Officer's Death

As the trial enters its fifth week, testimonies reveal conflicting accounts and potential mishandling of evidence.

Karen Read is accused of killing her boyfriend, Boston police officer John O'Keefe, by running him over with her SUV.
The defense argues that O'Keefe was beaten inside a fellow officer's home and his body was staged to frame Read.
A federal agent admitted to destroying his phone, which contained messages relevant to the investigation.
Testimonies include claims of a strained relationship and high blood alcohol levels for both Read and O'Keefe.
Jurors heard that O'Keefe's niece and nephew described frequent arguments between the couple.