1.   Detectives are investigating claims that the two officials took bribes.

2.   Dozens of scientific studies investigated the claims.

3.   Insurance companies started hiring him to find stolen goods and investigate false claims.

4.   The Police Department has suspended six officers from duty while they investigate claims of fraud and corruption.

5.   The two sides agreed to set up a commission to investigate claims.

6.   ...a request to investigate a claim about maladministration.

7.   A sub-committee was deputed to investigate the claims.

8.   The cost of investigating your claim will depend on the amount of work required.

9.   The additional expenses of investigating your claim are known as disbursements.