After the alleged poison attack on a campus of the Technical University (TU) in Darmstadt, none of the victims need to be treated in a hospital.

"As far as we know, everyone is out of the clinic," said a spokesman for the TU on Wednesday.

Seven people showed symptoms of intoxication on Monday.

A 30 year old student was meanwhile in mortal danger.

According to the investigators, several milk cartons and water containers had been mixed with a harmful substance.

After the alleged poison attack on a campus of the Technical University (TU) in Darmstadt, the investigations of the 40-member homicide squad are ongoing.

"The first thing now is to hear witnesses," said a prosecutor's spokesman on Wednesday.

Investigate in all directions and work closely with the TU.

The commission called "Licht" is investigating the suspicion of attempted murder.

Seven people showed symptoms of intoxication on Monday.

A 30 year old student was meanwhile in critical condition.

According to the investigators, several milk cartons and water containers had been mixed with a harmful substance.

They did not say what substance it was.