A general view shows flooding over a submerged park beside the Han River of Seoul on Aug 3, 2020. (ED JONES / AFP)

SEOUL / MUMBAI - Fourteen people were killed and more than 1,000 people forced from their homes as 42 consecutive days of rain - the Republic of Korea’s longest monsoon in seven years - triggered floods and landslides, authorities said on Tuesday.

Heavy rain, which has also battered China, Thailand, Myanmar and India in recent days, inundated farmland and flooded parts of major highways and bridges in the capital, Seoul.

The victims included three New Zealanders from the same family, who were found dead on Monday after a landslide hit vacation cottages in Gapyeong country, northeast of Seoul.

They were a woman believed to be 65, her 36-year-old daughter and her three-year-old grandson, a Gapyeong police official said.

The New Zealand foreign ministry said it was aware of the deaths and was providing consular assistance. It did not elaborate.

President Moon Jae-in expressed concern for the impact of 42 days of rain, which weather officials said was the longest such stretch since 2013, on public sector emergency workers already battling the coronavirus pandemic.

ROK President Moon Jae-in had urged national and regional authorities to “make all-out efforts to prevent further loss of life”

He urged “all-out efforts to prevent further loss of life” by national and regional authorities, such as action to avert landslides and evacuate people, even in cases of little apparent danger.

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Most of the flooded roads and bridges along the Han River in central Seoul that had backed up traffic and damaged infrastructure were back in operation on Tuesday, the Yonhap news agency said.

In neighboring Democratic People's Republic of Korea (DPRK), state media warned of possible flooding.

“All the sectors of the national economy... are taking steps to prevent damage from the downpour,” state news agency KCNA said, saying that some areas were predicted to receive as much as half a meter of rain.

Visitors shelter beneath umbrellas during heavy rain on Namsan mountain in central Seoul on August 3, 2020. (ED JONES / AFP)

Citing unidentified ROK government sources, Yonhap said the DPRK opened the floodgates of a border dam on Monday without advance notice to its neighbor.

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In India, Mumbai authorities issued a red alert on Tuesday and warned people not to venture out after heavy overnight rain in the financial hub brought flooding and travel chaos.

A woman holding an umbrella walks between trees in Seoul on August 3, 2020. (ED JONES / AFP)

Some suburbs have seen more than 300 mm of rain in the 24 hours to Tuesday morning and more heavy rain is expected over the next two days, said India Meteorological Department (IMD) official K.S. Hosalikar.

The department issued a red alert for the city for the next two days and civic authorities advised people not to venture out unless absolutely necessary.

Trains, already running skeleton services due to the novel coronavirus lockdown, were suspended in several places because of flooding and traffic was disrupted on some of the city’s main roads.

Heavy rain has also battered China, Thailand and Myanmar in recent days.