It is believed that the Israeli government requested the IAEA do inspections in Tehran to see if the Iranian government is storing materials and equipment related to a nuclear weapons program. The IAEA has not confirmed or denied these inspections and said its activities in Iran are in keeping with the Iran Nuclear Agreement.
OUTCOME: Reports states that the samples taken from the inspections will not be fully done with testing until June. An IAEA report on the matter may not be mad available to much later than the completion of testing on the samples. An IAEA report that confirms Iran is maintaining a secret nuclear weapons program can have a big influence on the Iran Nuclear Agreement and the course of action Israel takes with Iran.
See article here: https://www.armscontrol.org/blog/2019-04-05/iaea-reportedly-inspects-iranian-warehouse-p41-iran-nuclear-deal-alert-april-5-2019