Four persons, including three non-Manipuri labourers, were injured when two bombs exploded in separate areas in Manipur on Thursday, official sources said.

Two non-Manipuri labourers were injured at Ukhrul town bordering Myanmar when a powerful bomb exploded on Thursday afternoon, the sources said.

The bomb, planted by suspected militants in a shop exploded around 2.30 pm, destroying a Maruti van parked nearby.

In another incident, a powerful bomb set off by suspected militants injured another two, including a non-Manipuri labourer, they said.

No individual or group has claimed responsibility for the blasts.

Unidentified militants have been targeting non-Manipuri labourers for some years to drive them away from the state as their numbers are rapidly increasing, sources said.

So far around 58 non-Manipuri labourers have been killed in the state in the past two years by unidentified militants.