KYIV, Ukraine (AP) — A Russian rocket attack targeted the northeastern Ukrainian city of Sumy on Tuesday, killing at least four people and wounding 25, officials said. President Volodymyr Zelenskyy denounced the assault, saying it underscored that Moscow has no intentions of halting the 3-year-old war.

Ukraine is claiming an underwater explosion that closed down a bridge connecting Russia to Crimea, according to security officials. This comes after both countries reportedly made little progress in direct peace talks held on Monday.

The Ukrainian Security Service says it detonated around 2,500 pounds of explosives under abridge linking Russia to Crimea, causing significant damage.