Vic man allegedly killed partner in bath

A Melbourne man has handed himself in to police after allegedly drowning his partner while they were both in the bath.

Murat Davsanoglu, 42, faced Melbourne Magistrates' Court on Wednesday, charged with the murder of young mother Ozlem Karakoc, 34.

According to court documents, homicide detectives were contacted on Monday night by a solicitor who said Davsanoglu wanted to hand himself in after police issued a missing persons alert for the pair earlier the same day.

Davsanoglu told investigators the two had a suicide pact, and he attended Ms Karakoc's home at Dandenong on Friday night, where the two got into the bath together.

It is alleged Davsanoglu used his full body weight to drown Ms Karakoc as she struggled against him.

After her death, Davsanoglu put Ms Karakoc's body in the boot of his Ford Falcon and drove toward Mildura, where he planned to dump her body, it is further alleged.

However, he instead returned to Melbourne and is accused of placing her, wrapped in a blanket, in an empty garage at a home at suburban Lalor.

Davsanoglu appeared briefly in court on Tuesday night and again on Wednesday morning, when he did not apply for bail.

He was remanded in custody to reappear before the court on November 29.

Readers seeking support and information about suicide prevention can contact Lifeline on 13 11 14.

Suicide Call Back Service 1300 659 467.