Man who complained about girlfriend's murder is the killer:

In a grisly twist, police today said that a 26-year-old man, who had complained that he witnessed four unidentified youths brutally attack his girlfriend, causing her death, is responsible for the killing.
Birbal Prasad, a native of Raigad in Maharashtra, had yesterday filed a complaint with the police that four youths attacked him and Vandana Prasad (22) at a secluded spot near the railway tracks in Naranpura area on the night of January 14.
He had claimed that the attackers stabbed Vandana to death for resisting their rape attempt.
However, during investigations, police claimed to have found a suicide note written by Prasad which implicates him.

"It appears from the note that Birbal had planned to kill Vandana first and then to commit suicide," said Joint Commissioner of Police, Manoj Agrawal.
The note read that the duo were in a relationship and he wanted to take revenge on Vandana as her parents had insulted him in the past. He earlier told the police that their engagement had been called off some months ago.
"As per his planning, Birbal allegedly killed Vandana and then injured himself to end his life. But when he survived, he changed the story and claimed that four youths were involved in the attack," said Agrawal.

"Prasad is yet to admit to his crime. He is still in a serious condition and undergoing treatment, so we are yet to question him about the exact motive behind his act. After the investigation, we will lodge a case of murder against him," said Agrawal.