The father of the four-year-old girl who was raped and killed last week has refused to perform daughter's final rites until the police assure him that his family would be granted justice.

"I will not perform last rites of my daughter until I am satisfied that the investigation is going in the right direction. If the police fail, I will demand another probe," the father of the deceased told IBNS.

The inconsolable middle-aged father of the victim is apprehensive that like most other cases, police will let off the accused with a small penalty or a few days imprisonment and the killer will roam free after that.

He has apparently approached the Mumbai police commissioner to trigger proper probe by Goa police and has demanded a death penalty for the killer.

Goa police on Wednesday arrested Deepak Kumar, a construction worker who brutally murdered the four-year-old Seema after raping her in Quepem town, Panaji. The mortal remains of the girl was found decomposed in a plastic bag at the construction building on Tuesday morning.

"If he (Deepak) is let off with a small penalty or short imprisonment, he will victimize other innocent girls. He deserves death sentence. This punishment will be a lesson for others," said Seema's father, a Mumbai-based trader.

Seema, 4, a resident of suburban Kurla area in Mumbai went missing on May 20 from Goa, where she had gone for summer holidays to her grandparents' house.

The accused Deepak Kumar is married and hails from Begusarai, Bihar. According to the police, Kumar confessed on Sunday evening that he had sexually abused tand killed the girl.

"The girl was playing with other kids when Kumar approached her and offered her a chocolate and took her to an under-construction site where he raped her," PTI quoted police Inspector Santosh Desai as saying.

Kumar strangulated her to death after raping her. He has been booked under section 302 for murder and 201 for destroying evidences of the IPC, and grave sexual assault under section 8 (2) of Goa Children's Act 2003.

(With inputs from IBNS)