Security forces are seen near a damaged building one day after the security incident, at the city of Al Salt, Jordan, Aug. 11, 2018. (Reuters photo)

AMMAN, Aug. 11 (Xinhua) -- The death toll in a raid on a group of terrorists in the city of Al Salt, northwest of capital Amman, rose to three, the government of Jordan said in the latest news release on Saturday night.

According to the Minister of State for Media Affairs Jumana Ghunaimat, the terrorists hiding in a building opened fire on security forces who were chasing them.

One of the killed was identified as a police officer and the authorities did not make it clear whether the other two were security forces or civilians, as around 16, including civilians and officers, were injured.

The terrorists, the minister said, were behind an attack on Friday by an explosive device that killed a security officer in Fuheis in Amman.

"When the police forces entered the building, the terrorists blew up the building," she said in a statement.

The terrorists refused to surrender and started opening heavy fire.

The security operations are still ongoing until late Saturday while three terrorists were arrested, said the minister.

Medics at Salt Public Hospital called for blood donation.

"We have many injuries ... Many of the injured are in serious conditions. We need blood donations," one of the medics at the hospital told Xinhua.

On Friday, a Jordanian officer was killed and six others were injured when a primitive explosive device detonated in Fuheis area near Amman, according to a news release from the Interior Ministry Saturday.

The ministry said that investigations were underway and no group claimed responsibility for the attack yet.