I realize this is Law SE and not Expatriates SE or Travel SE, but it might be helpful for the OP and other readers to sort out the various steps of police involvement in Germany:
Anybody can call the police if he or she thinks there is a crime or emergency.
Germany has separate numbers for fire/ambulance (112) and the police (110). The police dispatcher who is answering the 110 call will try to determine, from the verbal description, if one or more police cars should be sent and how urgent the situation is. At that point nobody is accused of anything yet.
A deliberate, malicious misuse of the 110 system will be prosecuted (§145 StGB). A mistaken or overly excited call will not be prosecuted.
The police will ask what happened.
Usually there will be several rather upset people on the scene when the police arrive. Any of them could be the perpetrator or the victim of a crime. The police must sort out who accuses whom. Often several people accuse each other.
If the police consider someone a suspect, they will inform the suspect that he or she is not required to make a statement to the facts, etc. Statements to his or her identity are required.
If the police consider someone a victim, they may ask the victim if the victim wants to file a criminal complaint. The victim can inform the police that he or she wants to file a complaint without being asked by the police (§158 StPO). The victim can also file the criminal complaint at a later time, verbally or in writing, at a police station or prosecution office.
The criminal complaint is then handled by the police and the prosecution service.
The police investigates facts and collects witness statements, if that seems necessary. The prosecution decides if it appears likely that a crime was committed and that it can be proven in court. Only then does the case go to court.
(There are some legal procedures if the victim of a crime believes that the prosecutor made a mistake by not going to trial, but that's a rather unusual situation.)
So if the landlord called the police, and if you are traveling right now, he may have filed a criminal complaint against you which is being investigated while you are away. When you come back you may be asked to make a statement. It might be a good idea to consult a lawyer before you do, even if that costs some money.