Around 20 per cent of heinous crimes like murder and rape reported in the capital in 2011 are yet to be solved even as police claimed that there was a decline in the number of such incidents.
Of the heinous crimes, working out of murder cases was the least as 27.59 per cent of the 87 cases reported in 2011 remained unsolved.
According to Delhi Police statistics, a total of 330 heinous crimes were reported in 2011 till March nine which is a 16.24 per cent decrease from the 394 reported during the same period in 2010.
"There is a decline in the number of heinous crime in the city in 2011 compared to the corresponding period in 2010 ," a senior police official said.
However, he said, overall 72.41 per cent cases were solved.
The figures showed that murder cases have decreased to 87 from 96 in 2010 though attempt to murder cases showed an increase of two to 56.
Incidents of robbery also showed a declining trend as it registered 113 in 2011 as against 142 the previous year same period.
"One of the important decline was noted in rape cases where the numbers came down to 55 from 82. This year rape cases have come down by 32.93 per cent and molestation cases are down by 24.79 per cent," the official said.
Dacoity was down to seven from previous year's eight while kidnapping for ransom cases were two this year as against five last year. Snatching cases also came down to 197 from 240.
The official said all the seven cases of dacoity reported this year and two cases of kidnapping for ransom were solved while 92.73 cases of rapes were solved.
"The lowest rate of solving of cases among heinous crimes was in murder at 72.41 per cent. However, 91.07 per cent of the attempt to murder cases were solved," the official said.
According to the official, a total of 4,188 persons were arrested this year till February 28 in heinous and non-heinous crimes.
"Twenty-five were convicted while 11 are acquitted. 894 are facing trial while investigations are pending against 3,258 accused," he said.a