Subway stations and major roads were underwater in the South Korean capital Seoul after record-breaking rains caused severe flooding, with at least seven people dead and seven more missing, officials said Tuesday. Authorities warned of more rain to come even as emergency workers tried to clear the hulks of flooded cars, which AFP reporters saw strewn across major intersections throughout the city. Dramatic images shared on social media late Monday showed people wading through waist-deep water, metro stations overflowing, and cars half-submerged in Seoul's posh Gangnam district, which was particularly hard-hit when torrential rain battered the city. The downpour that began Monday is the heaviest rainfall in South Korea in 80 years, according to Seoul's Yonhap News Agency. IMAGES AND SOUNDBITES ++COMPLETES WITH VIDI_32G93PP++