  Despite several decades of both experimental and theoretical work the nature
of the hidden order transition at THO = 17.5 K in URu2Si2 remains enigmatic. We
report here low field DC magnetization as well as AC susceptibility
measurements performed on single crystals with field along the c-axis. A peak
in the first order AC susceptibility is observed at T=16 K in close proximity
to the well known change in slope at THO=17.5 K. Third order susceptibility
measurements on the other hand reveal a signature only at 16 K with no
discernible change at THO. However, both transitions are visible in the fifth
order susceptibility. A signature at this lower transition, as a spontaneous
ferromagnetic signal, also appears in low field DC magnetization measurements.
A similar but larger ferromagnetic response appears at T~35 K. Both these
ferromagnetic signatures are suppressed in a small field (B ~ 40 Gauss
||c-axis). The close proximity of the lower signature to the hidden order
transition and the simultaneous presence and suppression of a ferromagnetic
signature at 35 K could be due to the removal of degeneracy in the complex
order-parameter of the hidden order transition due a "symmetry breaking field",
at least locally within the crystals of URu2Si2.
