A powerful blast inside a shop in Kathmandu, Nepal killed four people and injured five, while the explosion at the house about four kilometres away left one dead and another injured.

Four men died and six were injured Sunday in two separate explosions in Kathmandu, Nepali police said.

There was no immediate claim of responsibility but police said they suspect involvement of a Maoist splinter group whose pamphlets were found in a house where one of the explosions took place.

A powerful blast inside a shop killed two people and injured five, while the explosion at the house about four kilometres away left one dead and another injured.

“We are investigating both incidents,” Police spokesman Bishwa Raj Pokharel told AFP.

“Police have recovered pamphlets of Netra Bikram Chand-led Communist Party of Nepal near the spot of the incident,” SP Singh added.

A person apparently fled the scene after the incident at Ghattekulo, according to eyewitnesses.

Nepal has enjoyed a relatively peaceful environment since the end of a decade-long civil war which concluded with a peace deal struck in 2006.

But some former guerrillas, have broken away, accusing its leaders of betraying their original revolutionary ideals.

In February, the same Maoist splinter group was implicated in an explosion that killed one person outside the office of a telecom company Ncell, part of Malaysia-based Axiata Group Berhad.

The government outlawed the group following the incident, banning their activities.