The noun 警方 (jǐngfāng) means 'the police' or 'police authorities.' It is a formal term used primarily in news reports and official statements, as opposed to the more colloquial 警察 (police officer). It refers to the police as an institution rather than individual officers.
警方正在对这起案件展开调查。
Jǐngfāng zhèngzài duì zhè qǐ ànjiàn zhǎnkāi diàochá.
The police are conducting an investigation into this case.
警方呼吁目击者尽快提供线索。
Jǐngfāng hūyù mùjī zhě jǐnkuài tígōng xiànsuǒ.
The police are calling on witnesses to provide leads as soon as possible.
据报道,警方已经逮捕了三名嫌疑人。
Jù bàodào, jǐngfāng yǐjīng dàibǔ le sān míng xiányí rén.
It is reported that the police have arrested three suspects.