The explosion in Istanbul's Maltepe district is thought to have come from a package sent by courier to an electronics company.
Three people were wounded by an explosion in Istanbul's Maltepe district on Monday, local media reported.
The blast is believed to have come from a suspicious package sent by courier to an electronics company.
Local news channels said that the office targetted in the attack belongs to a brother of former Turkish prime minister Mesut Yilmaz. Other reports said that the victims also included the son of Turkey's former finance minister Kemal Kurdas.
Maltepe is a commercial and residential district on the Asian side of Istanbul. Turkey has been on high alert since the past few weeks following a spate of attacks by terror groups, Daesh and PKK.
Meanwhile, at least ten people were wounded when a steam boiler exploded in a cosmetics manufacturing plant situated in Istanbul's working-class suburb of Sultanbeyli, where there are many car repair shops and small factories.