Apple says authorities have "utterly failed" to show they need the company's help to get data from a locked iPhone in a New York federal drug case, where the tech giant is continuing its fight with the government over access to customers' phones.

Apple wants a judge to uphold a magistrate's ruling that the government has no authority to compel the company's help.

Authorities recently dropped their demand for Apple's help in a case involving an iPhone used by a San Bernardino mass killer after the FBI found another way into that phone.

Prosecutors say that method won't work with the New York iPhone. Apple said in court papers Friday that authorities haven't shown they've exhausted other options, and that the government wants to force Apple's help in numerous cases.

-AP