At least three people among two siblings have been killed after several mortar rounds landed around Villa Somalia, the Presidential Palace of Somalia in Mogadishu on Thursday noon, residents told Mareeg.com.
Another 4, people wounded in the attack.
Somali authorities gave no details of latest incident.
The attack comes as Villa Somalia was hosting a hand-over ceremony, with the presence of the outgoing President Hassan Sheikh Mohamed and the President-elect, Mohamed Farmajo.
No group has claimed responsibility for the mortar attack on Villa Somalia.
Earlier this month, several mortar rounds landed near airport of Mogadishu, while the country preparing presidential election, but no casualties were reported.