Dharamshala, April 17 -- Grieving father of the 19-year-old girl murdered in Mandi has demanded death penalty for the accused. "We have lost our daughter and we should be given justice. He (the accused) should receive the death penalty. We want the truth to emerge regarding why she was brutally killed in this manner," said the girl's father Joginder Singh, a truck driver who works in Baddi (Solan). The 19-year-old victim, a college student, was brutally murdered on Monday morning in the Sarkaghat sub-division of Mandi district. The victim, identified as Siya Guleria, of Nain village, was on her way to college. According to reports, an assailant intercepted her and slit her throat with a sickle. He also stabbed her multiple times in the neck and arm, causing her to collapse and die on the spot. He was later arrested and a murder case was registered against him. The family has also urged the police to immediately uncover the motive behind the crime and demanded speedy investigation. "The last time I saw Siya was four days before the incident when I had come home. She was the brightest among my daughters-sharp and excellent in her studies. We had high hopes for her," he said with tears in his eyes. The family stated that even after four days have passed they still do not have any clue why she was killed. They warned that they will take to the streets if the police fail to provide them with answers. Shiv Charan Singh, victim's uncle, said, "We want death penalty for the accused but first we want to know the motive behind the murder." Leader of Opposition Jai Ram Thakur, who met the family members at Nain village on Thursday, said, "Everyone here is in shock. They are unable to understand why this happened. So far, we have learnt that apparently the accused was a drug addict and took this step, but many questions remain unanswered." Meanwhile, a local court on Thursday extended the police remand of the accused Vikas Patiyal, for four more days, said Vinod Kumar, Mandi superintendent of police, adding that investigation in the matter is u nderway....