The alleged father of Iran's nuclear program, Mohsen Fakhrizadeh-Mahabadi, is believed to have been present in North Korea last week in order to obeserve its third nuclear test, The Sunday Times reported citing Western intelligence sources.
According to the sources, Fakhrizadeh-Mahabadi was responsible for the development of a warhead "small enough to fit on to one of the ballistic missiles developed by Iran from North Korean prototypes," the report stated.
North Korea said its test on Tuesday had "greater explosive force" than the 2006 and 2009 tests, which were widely seen as small-scale.
Reuters contributed to this report
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