KATHMANDU, Nepal (CNN) -- At least two people were killed and a dozen were wounded when three explosions went off simultaneously in different parts of the Nepalese capital on Sunday.
Among the injured were school students. A blast went off at a bus stop.
The explosion that caused the most injuries was inside a mini-bus, superintendent of police Sarvendra Khanal told CNN.
Police do not know who carried out the attacks, and have refused to speculate.
No group immediately claimed responsibility.
It's the first time blasts have rocked the capital since former Maoist rebels signed a peace accord last year. They joined the government earlier this year.
There are a number of armed groups operating in the south of the country, demanding more rights for the ethnic groups in the region.
Those groups have set off bombs in the south, but never in the capital. E-mail to a friend 
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