Israeli swimmer Anastasia Gorbenko was booed by spectators after her silver medal in the 400 metre medley at the world swimming championships in Qatar on Sunday.
The reaction was heard when the 20-year-old was interviewed shortly after her race, although other swimming fans gave her encouraging applause.
Qatar is regarded as one of the most important political mediators in the war between Israel and Palestinian Islamist group Hamas in the Gaza Strip.
Reports say the emirate supported Hamas financially for many years before the outbreak of the war, with Israel's knowledge and approval.
Many people in Qatar sympathize with the Palestinian cause.
Sunday was the last day of the two-week world championships.
