Pakistan blast
3 grenade attacks target police station and academic institutions in Karachi. Picture: Rescue workers and crime scene investigators inspect the site of a suicide bomb attack close to a polio eradication centre in Quetta, Pakistan, Jan. 13, 2016.Reuters

Three hand grenade attacks by unidentified men at different locations in Karachi reportedly injured several people and created panic in the city on Friday.

A police station, college and school were targeted in the attacks.

The last of the three attacks happened when a hand grenade was hurled at a private school in Nazimabad, injuring two students, reports said.

Another attack took place at the Mobina police station, where a policeman was injured and a vehicle damaged, while the other another attack took place at APWA Girls College in Karimabad. The grenade was thrown at the college from the Karimabad flyover, SSP Central Muqqadas Haider told Pakistani news portal The News International.

No deaths have been reported so far from the attacks.

Recently, a Taliban leader had threatened that the militant group would target more academic institutions, after an attack on the Bacha Khan University near Peshawar on Jan. 20 killed at least 20 people. 

"Now we will not kill the soldier in his cantonment, the lawyer in the court or the politician in parliament, but in the places where they are prepared, the schools, the universities, the colleges that lay their foundation," Reuters quoted Umar Mansoor, a leader in the Islamist group, as saying. "With the mercy of god, our attacks on all universities and schools will continue," he added.