QUETTA, Aug 14: Three powerful explosions shook Quetta on Tuesday night while rockets were fired at security check-posts in Kohlu.

A group of rioters blocked the Sariab road late in the night and pelted the passing vehicles with stones.

Police sources said that unidentified people hurled a device at the house of a government employee, Mushtaq Jamali, in Wahdat Colony which landed and exploded on its roof. “It was a locally made device,” police said, adding that windowpanes of several houses in the locality were shattered.

Two other explosions were heard in the city, but till late night the exact location of the blasts could not be ascertained.

Sources said that two rockets were fired on a checkpost of Frontier Corps near Kohlu. The rockets exploded away from the target.

According to another report, militants fired many rockets at another checkpost of FC in Kahan area. The FC personnel returned the fire and lobbed rockets at the positions of militants.

The rioters blocking the Sariab road in Quetta chanted slogans against the government. People pelted vehicles with stones, smashing windscreens of at least half a dozen vehicles.

At least 60 suspects have been arrested during the last three days in connection with bomb explosions and grenade attacks in different parts of Quetta.