What's "digging" mean here? Is it used in this way often?

Native speaker’s answer
Rebecca
Here "digging" refers to research and investigation, whether it's informal or formal. It can be used for actual jobs like police work, or it can be used to find something out about a friend or random piece of information. And yes, it is often used this way! Ex: We did some digging and found new evidence for the case. Ex: Upon doing some digging, I discovered that Cindy was at the mall last night.