3 sentences

1. 这不是民事或刑事案件。

   zhè bù shì mín​shì huò xíng​shì àn​jiàn.

   This isn't a civil or criminal case.

   Source: OpenSubtitles

2. 这是一起严重的刑事案件。

   zhè shì yī qǐ yán​zhòng de xíng​shì àn​jiàn.

   This is a serious criminal case.

   Source: Dong Chinese Dictionary

3. 警方正在调查这起刑事案件。

   jǐng​fāng zhèng​zài diào​chá zhè qǐ xíng​shì àn​jiàn.

   The police are investigating this criminal case.

   Source: Dong Chinese Dictionary