Tennessee execution team members failed multiple times to establish working IV lines in Christa Pike's arms before her attempted execution and warned that some of her veins may have ruptured, or "blown," before she was injected with the lethal drug, her attorney wrote in a court document filed Thursday.

Last year, Florida set a state record with 19 executions in a year, and it's poised to tie that mark if another execution is carried out next month as scheduled.