“Like always, Iran condemns these terrorists and inhumane acts in Almaty,” said Iranian Foreign Ministry Spokesman Bahram Qassemi.
He said escalating terrorist moves in neighboring states is concerning, and all regional states should fight the ominous phenomenon in a united way.
Bahrami said that terrorism and violence anywhere and anytime is unacceptable and is condemned.
Security forces in Kazakhstan arrested two men suspected of gunning down five people in attacks on a police station and a security building on Monday in the country's largest city Almaty.
Kazakhstan's National Security Committee (KNB) declared its "anti-terror" operation over in the financial capital after detaining the two suspects.
Three police officers and two civilians were shot dead in what President Nursultan Nazarbayev called "a terrorist act".
The KNB announced "the conclusion of the anti-terror operation" and lowered the terror threat level from "critical" red to "moderate" yellow shortly after detaining the second of the two men.
The first suspect is accused of killing a local resident during a carjacking and attacking the police station in broad daylight, then shooting dead a police officer and seizing his gun, the interior ministry said.
According to ISNA, a civilian also died during the shooting at the police station.
The suspect then shot dead two officers as they gave chase, before he was arrested.