This is the second arrest in this case, as another accused Surendra Pol was arrested on Wednesday.
Kashyap said that Mandrekar was a gang leader of a group of eight people, who brutally killed the Nigerian.
Police officials confirmed that the post-mortem report has revealed that the deceased had 25 stab injuries.
Protesting the murder in Mapusa, a group of 200 nationals from the African country had blocked a major highway in Goa and clashed with the police and locals. 52 Nigerians were arrested for creating ruckus.