Lawrence Davis, who stabbed his estranged wife Elizabeth Singleton to death in her home in the District in 999 while their young son sat in a car outside, was sentenced to 45 years in prison Friday.

Christopher Singleton, son of Lawrence Davis and Elizabeth Singleton. (Katherine Frey/THE WASHINGTON POST)

D.C. Superior Court Judge William M. Jackson sentenced Davis, 47, who was found guilty of first-degree murder in November.

His son Christopher Singleton, who was six years old when his mother was killed, did not attend the sentencing.

The investigation into Elizabeth Singleton’s death was marked by missteps and delays, and Davis was not charged until 2009.

Christopher Singleton testified in the two-week murder trial. Davis did not take the stand.

Read more: The Post’s crime coverage