ST. PAUL (AP) -- St. Paul police say there were six drug overdoses in the city in the span of a few hours this weekend.

The police department said in a Facebook post Saturday that investigators suspect in some cases people thought they were using cocaine but it's possible fentanyl or another drug was mixed in. The six overdoses happened over a two and a half-hour period.

The incidents prompted police to issue an alert to remind the public people can't be prosecuted for seeking help for someone who overdoses.