This comes after Enyimba's 1-2 loss at home to Malian club, AS Real Bamako, in an African Caf Champions League match on Sunday.
An official of the club informed that Suleiman, who is fondly called 'Shuaibu Style Imam,' was handed the suspension for endorsing goalkeeper Femi Thomas for the match following a meeting that took place around 9.30pm to past 12 midnight Nigerian time.
Real Bamako scored twice via two corner kicks and the leadership of the club has blamed the goals conceded squarely on goalkeeping errors leading to Suleiman coming under the heat.
Apart from Suleiman's suspension, Enyimba chairman, Felix Anyansi Agwu, was said to have told the coaching crew led by Zachary Baraje that they have no choice than to win in Bamako and ensure the People's Elephant progress to the next round.
"I've never seen the chairman (Anyansi Agwu) this angry before. He was so furious and he made his intentions very clear by suspending indefinitely the goalkeeping coach for what he believes was poor goalkeeping from our keeper. The other coaches including head coach Zachary Baraje have been told they must win in Bamako and that means trouble if they don't win. It was a very long meeting that lasted into this (Monday) early morning," said the Enyimba official.
Supersport.com can also reveal that Enyimba's plan to camp in Otta ahead of the second leg clash in Bamako has been called off for now.
The Enyimba team were billed to travel to Lagos and head straight to Otta for a three-day camping before flying out to Bamako this week for the return leg of the Caf Champions League.
The 1-2 home loss to AS Real Bamako was the third time, the six-time Nigerian champions will lose a Caf Champions League match in Aba.
Enyimba's previous home losses in the Caf Champions League were to Africa Sports and Al Ahly in the 2004 and 2005 editions. Both games ended in identical scorelines of one-nil.