Over the last several years, Kataib Hezbollah appeared to fade a bit from the spotlight. The new case illustrates its continued nefarious presence.
Iran’s continued focus on dissident groups is part of its crackdown internally in which it has executed hundreds of people.
The camp houses more than 10,000 refugees, and it has been targeted by Turkey in the past.
Last year, the Iraqi parliament passed legislation criminalizing any form of "normalization" with Israel.
The statement comes amid heightening tensions between Iran and its arch-enemy Israel over Tehran's nuclear program.
The Islamic Republic can only cease support for these proxies by making the shift from being a revolutionary cause to a normal state.
Baghdad has agreed to increase the volume of heavy fuel oil supplied under an existing deal by 50% to 1.5 million metric tonnes this year.
A report alleges that the number of pro-Iran militiamen have grown so large that they are the third largest military force in Iraq.
Since May 1, the joint task force fighting the Islamic State group has conducted live fire exercises, which may involve newly refitted A-10 Warthog jets.
The attacks were carried out using car bombs against several government buildings among others, the statement said.