Maneka also assured that if the family members of the two girls want, she would recommend a CBI probe into the incident.
"Police laxity is equally responsible for the incident due to which two girls lost their lives. Police is still not acting in the right direction. All policemen involved in the incident should be terminated," she told said over phone.
"If the girls' famly members want a CBI probe, I will recommend it," she added.
The Minister said that she would soon constitute a "rape crisis cell" to ensure speedy action in such matters.
The two girls, who were cousins and aged 14 and 15, went missing from their house on the night of May 27 and their bodies were found hanging from a mango tree in a village in Ushait area the next morning.
The postmortem report of the two girls confirmed that they were raped before murder.
UP authorities today sacked two constables in connection with the crime. Of the seven wanted in the case, three have been arrested so far.