Bahrain's Supreme Criminal Court has sentenced eight people to life in prison for their part in the killing of a policeman in a bomb blast in November, the prosecutor's office said on Sunday.

The prosecutor's office said the eight men planted a homemade bomb close to where police usually erected a checkpoint during protests, before setting tyres on fire and blocking the road to lure police to the site.

One policeman was killed and four others were injured in the resulting blast, the prosecutor said.

Also on Sunday, the Interior Ministry said it had arrested five people in relation to another explosion that took place in the village of Maqsha on April 19.

Two people were killed in a car when a homemade bomb they were transporting in order to blow up a police checkpoint exploded, and another was injured.

The ministry is still looking for two more suspects in relation to the explosion, the ministry said on its website. -Reuters