"We can confirm the deaths of five people, including a child," reads a Twitter post.
The city police were also informed that several people were seriously injured in the incident.
Earlier, the senior prosecutor of Trier, Peter Fritzen, said that the suspect was a native of Trier, he was 51 years old.
The man is suspected of attempted murder and grievous bodily harm.
The motive for his actions is unclear.
It is known that at the time of the incident he was under the influence of alcohol.
The authorities also do not rule out that the suspect has a mental illness.
On December 1, in the city of Trier, a car ran into pedestrians, the driver was detained. As a result of the collision of a car, four people were killed, about 15 were injured.