By Oluwashina Okeleji BBC Sport, Lagos

Berti Vogts has not been in Nigeria since 18 June

The Nigeria Football Association has accused German coach Berti Vogts of violating his contractual obligations.

The former Scotland coach's contract stipulates that he spends a minimum of 10 days a month in the West African country.

But Vogt's departed the capital Abuja on 18 June and is not due to arrive back in Nigeria until 31 July.

NFA spokesman Ademola Olajire told BBC Sport that they are unhappy with Vogts who has failed to communicate with them since he left.

'Violation'

"Failing to show up is a clear violation of the terms of his contract," Olajire told BBC Sport on Saturday.

"There was no form of communication from Mr Vogts that he would not be coming into the country in July."

Olajire admitted though top officials of the NFA were also away for most of July, but insisted there should have been some sort of communication.

There was no communication from Mr Vogts that he would not be in the country in July NFA spokesman, Ademola Olajire

"We know the chairman and secretary-general were away for the better part of the month, but he should still have spoken to us.

"The executive board of the NFA meets on Sunday and the issue will be discussed.

'Appointment controversy'

"Vogts will have to explain why he failed to show up for the minimum 10 days as stipulated in his contract," said Olajire.

Vogts' appointment in February was met with a mixed reaction with critics pointing to his record with Scotland and his lack of experience of African football.

His decision to live and work from Europe has also proved controversial.

The 60-year-old coached Germany from 1990 to 1998, guiding the team to the 1996 European title and was the manager of Scotland's national side from 2002 to 2004.

He also played in Germany's 1974 World Cup-winning squad.