German police detained a person in a refugee centre in Solingen as they seek the perpetrator of a deadly stabbing that left three dead, a police spokesman told dpa on Saturday, adding investigations remain under way. Authorities did not say whether the person detained is suspected of being the attacker. The police spokesman said connections with the attack are still being examined. The news magazine Spiegel reported that the detained man was being interrogated as a witness and that the attacker remains on the loose. A police spokeswoman said she could not comment on that report and would confi…