( CNN ) -- Eleven people were killed and 29 injured during a stampede at an election rally for Nigerian President Goodluck Jonathan , officials said . The stampede happened during a rally at Port Harcourt stadium in the country 's southern delta , Rivers state spokesman Rita Inoma-Abbey told CNN . The area is the president 's home turf and a main area of support . A presidential spokesman said that Jonathan has called for a full-scale investigation into the cause of the stampede . The president `` has received with shock and sadness , news of the unfortunate loss of lives '' at the stadium , Ima Niboro said . `` I am sad , and heavily weighed down by this incident . It is sad , unfortunate and regrettable . I mourn with those who mourn tonight . May God grant us all the fortitude to bear this irreparable loss , '' Jonathan said . The stampede follows what has been an imperfect start to Jonathan 's campaign . At his first campaign stop in Nassarawa state , youths defaced his posters , burned tires , and two people were killed in the confusion . At another stop in Kano , supporters walked out before his speech , and in Ogun state he was criticized for calling opposition candidates `` rascals . ''
A stampede at an event for President Goodluck Jonathan killed 11 . It was at a stadium in an area where Jonathan has a lot of support . Comment: