Several explosions have been reported in various areas around Saravan in the southeastern province of Sistan and Baluchestan, bordering Pakistan, official news agency IRNA reported.

Security and law enforcement officials are investigating the issue, it added.

Pakistan conducted strikes inside Iran, AFP news agency reported, citing an intelligence official, after Iran struck "terrorist bases" in Pakistan's Balochistan province on Tuesday.

Pakistan responded to Tehran's "illegal" airstrikes and hit "seven locations" of Balochistan Liberation Army militant group inside Iran, Anadolu news agency reported, citing military sources.