The animals damaged furniture and air conditioning fittings in the his official Abuja office while he was in London receiving treatment, his media adviser Garba Shehu confirmed.
“These are also general works and it is not uncommon for Nigerian presidents to also work from the presidential villa. He has used the residential office for many years,” said Shehu.
“What is important is the job gets done, whether he does it from his bedroom or his sitting room,” Shehu told the Arise News broadcaster.
Shehu was unable to confirm the type of rodent responsible for the damage, which occurred during the president’s prolonged absence.“I do not have that level of detail,” he said, adding it was unclear how long the refurbishment would last.
During Buhari's time away, tensions surfaced, and calls grew for him to either return or resign.
The Nigerian leader met security chiefs at his official residence on Tuesday, ordering them to deal with threats to the unity of the country.
In the weeks before Buhari left for London on May 7, he also worked from the presidential residence.
Rumours about his health have dogged Buhari even before he came to power in May 2015. He rejected claims during the election that he was critically ill from prostate cancer.
In an official letter to Parliament on Monday relieving Vice-President Yemi Osinbajo of his duties as acting head of state, Buhari described his trip as a “medical follow-up”.
Clashes between protesters calling on Buhari to return and the president's defenders erupted in Abuja last week.
The health of Nigeria’s president is a sensitive issue. President Umaru Musa Yar’Adua died in office in 2010 from a long-standing, but previously undisclosed, kidney complaint. - AFP