European equities decline with CAC 40 down 1.7% and STOXX 600 falling 0.69%

European equity indices experienced a broad sell-off, led by a 1.7% decline in the French CAC 40 and a 0.69% drop in the STOXX 600. The underlying catalyst for the move remains unspecified in the report, leaving the duration and scope of the downward pressure uncertain.