Police are analyzing images captured by a dashboard camera on a light vehicle that was involved in a collision with a car and hit a group of toddlers in western Japan, leaving two of them dead, police officials said Thursday.

The driver of the car, Fumiko Shintate, 52, who was arrested at the scene on Wednesday, told investigators she was not paying enough attention when she made a right turn and collided with the light vehicle that was traveling in the opposite lane at an intersection in Otsu, Shiga Prefecture.

The police are now investigating her on suspicion of negligent driving resulting in death and injury.

Shintate told the police she was not aware of oncoming traffic before the collision occurred, police officials said.

(People pay their respects at the site of  the crash)

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The driver of the light vehicle, Michiko Shimoyama, 62, was also arrested at the scene but was released later Wednesday after the police deemed she did not bear responsibility for the collision.

Shimoyama's light vehicle was the only one equipped with a dashcam, according to the police.

Of the 13 children hit by the light vehicle, two of them, both aged 2, were killed while another 2-year-old was left in critical condition. The other children along with three nursery teachers were also injured.

The bereaved family of one of the two children killed issued a statement saying, "We are engulfed by deep, heartbreaking grief."

Both drivers were uninjured in the accident that occurred around 10:15 a.m. as the children and teachers were taking a walk near their Leimond-Oumi Nursery School.

There were no guardrails or curbs at the intersection. National Police Agency Commissioner General Shunichi Kuryu said the police intend to beef up safety measures including setting up more guardrails along routes to and from schools.

Neighbors and other people continued to come to the accident site Thursday to lay flowers.

"It is unbearable to think that children who only lived two years of their lives have died," said Yoshitaro Fujinaga, 81. "I don't want people who get behind the wheel to think lightly of driving."

The nursery school was closed for the day. The operator said it will refrain from taking children out for walks for the time being.