Police on Saturday seized 600 litres of diesel from Mahalaxmisthan Chok of Lalitpur. A resident of Phulasi-1 of Ramechhap district, Ishwar Giri (28) had kept the fuel for black marketing, police said. A team deployed from the Metropolitan Police Range, Lalitpur, had seized the diesel while checking his car (Ba 7 Cha 3587) yesterday. Giri was also arrested. The diesel was packed in 12 jerrycans. Meanwhile, police are looking into the case.