On Swedish Radio's morning news program, Johansson said the explosions may be linked to drug related gang violence and that these gangs need to be uprooted and the most active members taken off the streets.
Johansson added that the government has strengthened the police force in the area as well as passed legislation to toughened penalties for certain crimes.
The minister's comments come after Malmö experienced three blasts - two on Monday night outside an apartment building and a nightclub and one on early Wednesday outside a different apartment building. No one was injured in the explosions.
Last week, a residential block in Linköping, some 400 kilometers northest of Malmö, was also damaged by an explosion.