We will continue the investigation into how this happened.
They found no new clues in the investigation.
Upon further investigation, the raisins turned out to be rabbit droppings.
The FBI started their investigation.
What is the subject of this sentence? She was the subject of an investigation.
CSI had a special investigation to do.
The DA decided to initiate an investigation.
he was subject to an investigation
I'll take over the investigation from here, Sherlock.
Your entry has been withdrawn due to an investigation of plagiarism.
These almanacs should shed some light on your investigation.
Ignition initiated this fire. What initiated the investigation? Have you been initiated?
"The investigation concluded that all of the alleged crimes stemmed from one common motive."
The abstract noun is investigation, a word for a systematic study or a formal inquiry.
They had to exhume the body to conduct a full investigation. Another great sentence would be, they had to exhume her mothers body to verify how she had died.