He also visited the Maitama District Hospital, where those who sustained varying degrees of injuries are receiving treatment.
Jonathan, who arrived the scene of the blast at about 11.10am, was briefed at the spot where the bomb went off by an Assistant Inspector-General of Police, Mr. Suleiman Abba.
He was accompanied by the Minister of Health, Prof. Onyebuchi Chukwu; his Chief of Staff, Brig.-Gen. Jones Arogbofa, and other top government officials.
He spent about five minutes before moving to the hospital under tight security.
After he was conducted round the wards, where the injured were being attended to by the hospital's Chief Medical Director, Dr. Adetoun Adetimehin, the President spoke with journalists.
He urged Nigerians to bear the pains as security agencies worked hard to end insurgency in parts of the country.
Jonathan described the insurgency as one of the darkest phases of the country's history.
He said even as the President of the country, he had been having his fair share of the pains as he could not go to everywhere he would have loved to go.
The President said it was regrettable that while some Nigerians were busy engaging in nation building, some others were busy killing their compatriots.
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