The FBI recently took Apple to court in an attempt to get Apple to create software to unlock the iPhone 5C used by the San Bernardino shooters.
The court case ended after the FBI revealed that they had managed to gain access to the device with the help of a third party, we heard yesterday that the FBI had used hackers to access the handset.
According to a recent report by CBS News, the FBI have found nothing significant on the San Bernardino iPhone so far, although they are continuing to look for evidence on the device.
The FBI has not revealed as yet what method was used to unlock the handset, they have not decided as yet on whether they will disclose to Apple the method that was used to unlock the device.
Source CBS News