A dog owner says she thinks there’s a chance her prized pet was deliberately poisoned while competing at the Westminster Kennel Club show, causing it to die several days later.

Lynette Blue tells The Associated Press that her 3-year-old Samoyed named Cruz probably swallowed poison during the recent show.

But she said Thursday she’s not sure how it happened, and may never know.

Westminster issued a statement Thursday saying it wasn’t aware of any dogs ever being poisoned at its show. The 137th Westminster drew 2,721 entries earlier this month.