A son of deposed Islamist president Mohamed Morsi was freed Sunday a day after being arrested on suspicion of possessing hashish, judicial sources said.

Police said they found two joints on 19-year-old Abdullah Morsi and a friend in a car parked by the roadside in Qalyubia province north of Cairo, security officials said on Saturday.

They were released pending investigation after agreeing to give urine samples, judicial sources said, adding that the results had not yet been released.

Morsi's other son, Osama, had dismissed the accusations, saying the authorities were "fabricating the case" and that his brother's arrest was an attempt to "defame the family".