(CNN)  --  A fire at a karaoke bar and discotheque in Medan, in Indonesia's North Sumatra province, killed at least 20 people Friday night, according to a hospital.



At least two people survived, according to Aida Sofiati of the Pringadi Hospital in Medan.



Sofiati said 20 people were killed.



Mohammad Zein, a fire official, said the blaze started around 10 p.m., but firefighters were able to extinguish it within a half-hour.



He said the cause of the fire was not known.
( CNN ) -- A fire at a karaoke bar and discotheque in Medan , in Indonesia 's North Sumatra province , killed at least 20 people Friday night , according to a hospital . At least two people survived , according to Aida Sofiati of the Pringadi Hospital in Medan . Sofiati said 20 people were killed . Mohammad Zein , a fire official , said the blaze started around 10 p.m. , but firefighters were able to extinguish it within a half - hour . He said the cause of the fire was not known .
when did thsi happen
when did thsi happen
Friday night,
Friday night,