2 sentences

1. 有关当局正在调查这起事故。

   yǒu​guān dāng​jú zhèng​zài diào​chá zhè qǐ shì​gù.

   The relevant authorities are investigating the accident.

   Source: Dong Chinese Dictionary

2. 他让当局相信，你很快就会自愿返回。

   tā ràng dāng​jú xiāng​xìn, nǐ hěn kuài jiù huì zì​yuàn fǎn​huí.

   He's convinced the authorities that you will soon return voluntarily.

   Source: OpenSubtitles