The chief executive officer of mobile operator Etisalat Nigeria, Steven Evans, quietly resigned from his post in September, according to Bloomberg.

Bloomberg reports that Evans has returned to the UK after having been chief executive officer at Etisalat Nigeria since December 2008.

Evans joined Etisalat after it started full operations in Nigeria. Etisalat is Nigeria’s fourth largest mobile operator with just over 15 million subscribers, according to the Nigerian Communications Commission.

Etisalat Nigeria is a unit of the United Arab Emirates (UAE) headquartered Emirates Telecommunications Corporation. Etisalat has not made an official announcement regarding the departure of Evans.

At the time of writing, Etisalat Nigeria has not responded to requests by ITWeb Africa to confirm Evans’ resignation.

The Nigerian unit’s chief commercial officer, Matthew Willsher, has reportedly been appointed as acting chief executive.