Deputy Head of Ukraine's National Police Andriy Nebytov announced this.
"The war has changed the scope of search operations. Before the war, 12,292 people were considered missing for all the years of independence. Since the beginning of the Russian invasion, the number of missing persons has increased fourfold. Today, 50,150 people remain unaccounted for," he wrote.
Nebytov noted that due to the unpredictable situation at the front, massive Russian attacks on cities, migration and temporary occupation of the territories, information gathering and data verification are becoming more difficult.
According to the deputy head of the National Police, the workload of the criminal investigation has increased, but "operatives are working to the maximum and continue to fight for every human life".