A Pakistani man believed to have killed his own parents is now wanted for killing ten family members on Sunday, including his ex-fiancé over what authorities believe was a dispute over a dowry payment, The New York Times reported.

Gul Ahmed Said allegedly entered his uncle's house in Khyber-Pakhtunkhwa province at around 3:30 a.m. Sunday and opened fired, killing the uncle, aunt and cousins, including his 24-year-old second cousin whom he was supposed to marry. The other victims range from ages 12 to 23. 

Less than a year ago, the 20 something-year-old suspect allegedly killed his mother, father and two siblings after his family delayed the dowry payment to his fiancé Naveeda's family, according to The NY Times. 

Said's father wanted to raise funds to build a proper room to house a married couple in their small home. But Said became impatient, police in the province's Charsadda District said. 

"Mr. Said could not wait and opened fired on his family, killing his parents and two brothers," Shafiullah Khan, senior superintendent of police of Charsadda, told the newspaper.

Investigators also believe Said became bitter towards Naveeda's family for allegedly demanding a heavy dowry, which is not unheard of in Pakistan, according to the Agence France-Presse. The large dowries are seen as insurance in case the marriage doesn't work out.

It is unclear where Said was between the time of his parent's deaths and Sunday's murders.  As police track down the suspect's whereabouts, investigators are not excluding the possibility Said had an accomplice.

"It does not seem to be the work of one person," Khan told The NY Times. "It could be that he had help."