3 sentences

1. 警察迅速制服了那名持刀歹徒。

   jǐng​chá xùn​sù zhì​fú le nà míng chí​dāo dǎi​tú.

   The police quickly subdued the knife-wielding thug.

   Source: Dong Chinese Dictionary

2. 这名男子因持刀抢劫被警方逮捕。

   zhè míng nán​zǐ yīn chí​dāo qiǎng​jié bèi jǐng​fāng dài​bǔ.

   The man was arrested by the police for armed robbery with a knife.

   Source: Dong Chinese Dictionary

3. 警察正在全力追捕那名持刀歹徒。

   jǐng​chá zhèng​zài quán​lì zhuī​bǔ nà míng chí​dāo dǎi​tú.

   The police are doing their best to hunt down the knife-wielding thug.

   Source: Dong Chinese Dictionary