Sources close to the Apple company confirmed late Wednesday that engineers with the technology company are working to develop new security measures that would prevent government officials from breaking into locked iPhones as well as block Apple employees from accessing users' devices.

The security upgrade would further secure customers' information from being accessed by the government, according to one report. The recent move to enhance security comes two years after former government surveillance contractor Edward Snowden leaked classified information that the National Security Agency has used legal loopholes to penetrate tech users' information.

The announcement comes at the climax of a federal court fight in California in which the Obama administration has reached a stalemate in its legal battle to get access in data stored on the iPhone used by one of the terrorists in November's San Bernardino, Calif., attacks.

FBI Director James Comey has defended the federal agency's request to have Apple open the iPhone to them, saying earlier this week they are not looking for a key to unlock all iPhones, only assistance for this case.

But Apple's CEO Tim Cook won't give in, writing in a letter to customers this week that their devices have been created so that even Apple employees cannot access the contents of users' iPhones.

Federal wiretapping laws controlled by Congress would have to be altered to affect either side of the issue.

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