Csonews24 reported that Abdulsalami was reportedly flown abroad for medical treatment.
The retired Army General was said to have suffered a partial stroke.
He was first flown to a hospital in the United Kingdom (UK).
Writing on his Twitter page on Monday, Shehu confirmed that Abubakar is out of hospital and there was no cause for alarm.
“Alhamdu Lillahi for Allah’s mercy.
“I just ended a visit to His Excellency Abdulsalami Abubakar, former Head of State.
“He is out of hospital in a London apartment and apparently in no serious condition.
“He was his jovial self, maintaining a keen interest in developments back at home in Nigeria. Please, no cause for alarm.
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