Police say a string of explosions has struck the Pakistani city of Karachi, wounding at least 25 people.

The blasts came the day after a deadly suicide bombing in Islamabad killed 18 people, most of them police officers.

Babar Khattak, the Sindh province police chief, says at least two of the Karachi blasts involved “low-intensity explosive material.”

Karachi police chief Wasim Ahmad confirmed five blasts occurred.

Police said explosions were confirmed in the areas of Orangi, Qasba Mor, Hyderi Market, Shahra-e-Noor Jahan and Banaras.