One police officer was injured in the rocket attack, and no one was killed when four rockets landed near the inauguration grounds, according to the Afghan Interior Ministry. The Islamic State claimed responsibility for the attack.

Ghani and his main rival, Abdullah Abdullah, both held swearing-in ceremonies Monday after weeks of mediation efforts between the two men failed. Afghanistan’s election commission named Ghani the winner of the September presidential contest, with just enough of the vote to avoid a second round, but Abdullah declared the results fraudulent and claimed victory.