Accenture's chief executive of technology, Kevin Campbell, has abruptly left the company.

A press release issued yesterday said Campbell, 50, was leaving, with immediate effect, for "personal reasons", but gave no further detail. Campbell had worked at Accenture for a total of 24 years, over two separate stints.

Accenture is to appoint Martin Cole "immediately" as Campbell's replacement. Cole is currently chief executive of Accenture's Communications, Media & Technology operating group, as well as leading the company's mobility efforts. In the short-term at least, he will maintain responsibility for the mobile operations.

Accenture group chief executive Pierre Nanterme made no reference to Campbell's achievements with the company, in the official press release. Instead he focused on Cole, who he said was "a great leader with a proven track record of successfully running key parts of our business".

Campbell, who began in the role of technology chief executive in August 2009, had also been Accenture's head of outsourcing and as a senior managing director for business process outsourcing.

Before that he also led sales at Hewitt Associates, and was president at Exult, both consultancies. He also had an initial 17 year employment at Accenture, preceding these roles. In 2010, his total compensation package at Accenture was $6.1 million, according to Forbes.