This comes after both countries claimed to have stopped an attempted coupÃ‚Â against Theodoro Obiang Nguema's administration.
Several arrests have been made in Cameroon in connection with the alleged December coup.
Most of the presumed masterminds are believed to be mercenaries.
President Obiang Nguema is the longest serving head of state in Africa now, with close to four decades in office already.
His son is the vice president.