How did the truth about this Nasri guy who ordered his wife killed came to light?

Question

There was this police woman who got killed with a kitchen knife in front of their house. I read lately that her husband ordered her killed to claim insurance benefits to pay thousands of debt and he's got a mistress as well. How was the truth found out?

Answer 1

The killer's car was caught on a security camera.  

His cell phone had a call to the husband after the murder.  

The husband had a girlfriend and was in debt.

He had insured his wife for $700,000 3 months prior to the murder.

The cops were on the ball.