Rampant jaywalking is the most common factor in fatal car accidents in Seoul, a report showed Monday.

Between December last year and January this year, a total of 70 people were killed in 61 car accidents, the report by the Seoul Metropolitan Government said.

Of them, 49 were pedestrians, and 36 died while jaywalking and 23 were senior citizens.

City officials said they would fortify measures against jaywalking such as by installing more fences and improving safety facilities along the road.

The city will also hold pedestrian safety classes for senior citizens, they added.

By Lee Hyun-jeong (rene@heraldcorp.com)