President Joe Biden arrives at St. Joseph on the Brandywine Catholic Church in Wilmington, Del., to attend Mass, Oct. 29. AP-Yonhap

U.S. President Joe Biden expressed "deepest condolences" over a deadly stampede in Seoul that killed at least 149 people.

"Jill and I send our deepest condolences to the families who lost loved ones in Seoul. We grieve with the people of the Republic of Korea and send our best wishes for a quick recovery to all those who were injured," Biden said in a statement, referring to first lady Jill Biden.