Eight people were injured, one seriously, by the attacker who struck in the Harajuku fashion district shortly after midnight.
The man was also carrying kerosene in his vehicle, police said.
Nine people were injured when a man rammed a van into crowds celebrating New Year's Eve in Tokyo, Japanese authorities said.
One person, a 21-year-old man, has been detained on suspicion of attempted murder, according to police.
He is suspected of intentionally trying to kill people by driving the vehicle into them in the street.
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They were arrested inside the residence where Perez Arriaga was apprehended. "Please remember the man", Richardson also said. Residents, friends, relatives and fellow officers held back tears as they eulogized Singh during the candlelight memorial.
Police told broadcaster NHK that he initially told then he had conducted a terrorist act, but then later claimed it was related to executions.
The road was closed to traffic over the New Year, largely because of its proximity to the Meiji Shrine, which is a popular destination for people on New Year's Eve - many Japanese visit local or famous shrines over the new year period to pray for good fortune in the coming year.
One witness told NHK it was a "ghastly scene".
A large tank filled with kerosene was found in the vehicle, police said.
The vehicle hit its first victim about 30 metres into the narrow street before knocking down seven more over the next 100 metres, according to the Sankei Shimbun newspaper.
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Paceman Jasprit Bumrah finished with 3-53, following his six-wicket first innings haul, and left-arm spinner Ravindra Jadeja 3-82. The wicket triggered bear hugs and backslaps among the Indian side as travelling fans in the sparse crowd roared with joy.
But police said they were still investigating whether the man was actually connected to the doomsday cult.
Meanwhile in Germany, police have detained a 50-year-old man on suspicion of ramming his vehicle into a crowd of people after midnight on New Year's Eve at a crowded plaza in the north-western town of Bottrop.
There is no major fireworks display and no central point where revellers gather to see in the New Year.
By midday yesterday, hundreds of thousands of tourists had returned to the street filled with bright pink ornaments, although blue tarpaulins covering the scene of the attack remained.
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Umbrellas were banned as part of the tight security plan, police said, reflecting concern over the possibility of random attacks. Plastic ponchos were allowed, with street vendors selling them for $US5 on nearby avenues.