Four people were killed and three injured Saturday in a bomb attack in Jalalabad city, the provincial capital of Nangarhar province in eastern Afghanistan, police said.
The blast occurred when an improvised bomb planted in a garbage box went off through remote control, Xinhua quoted provincial police spokesman Hazrat Husain Mashriqiwal as saying.
The casualties include a police officer and three civilians, the spokesman said.
Police has launched an operation to arrest the culprits behind the incident.
The three wounded were shifted to a hospital in the city.
The attack follows Thursday's attack on a US forces' supply base in Torkham in the same Nangarhar province, that killed three Taliban militants.
