06/22/2015 01:27 EDT | Updated 06/22/2016 05:59 EDT

Abbotsford Teens Overdose On GHB At Mill Lake Park

The three teens were found vomiting and convulsing, according to police.

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ABBOTSFORD, B.C. - Police in Abbotsford, B.C., say three people including two teens are in serious condition after overdosing on a drug believed to be GHB.

Officers say one of their friends called police from Mill Lake Park at about 6:45 p.m. Sunday to report that the youths were having a bad reaction to a drug.

The caller said the three were vomiting and convulsing.

Police say they arrived to find a 19-year-old man and a 15-year-old girl unresponsive, and a 17-year-old girl who was semi-conscious.

All three remain to hospital and are expected to survive.

Police have issued a reminder that GHB and other street drugs can contain dangerous and unknown additives.

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