Five Chinese, according to their lawyer Brian Angwenyi have gone missing after being arrested by Immigration Department officers.
The Kenyan government has therefore been sued over their missing.
Mr Angwenyi says in court papers that the five were arrested on Ngong Road on February 15 and have not been seen since.
Gang Shao, Xiaoying Qin, Yang Ting Ting, Li Kangzi and Nan Yangyang are listed as petitioners in a case filed at the Milimani Law Courts.
Mr Angwenyi, in a sworn affidavit, lists the Director of Public Prosecutions, the Attorney- General, Inspector-General of Police and the Director of Immigration as respondents.
He says that efforts to trace them have been futile even after searching in morgues, hospitals and police stations. Mr Angwenyi says the five were taken to Nyayo House and later to immigration officers at Jomo Kenyatta International Airport (JKIA).
He claims that their passports were confiscated and they are being held incommunicado.