Goa Crime Branch is investigating an allegation of rape by a 28-year-old Australian woman at Palolem beach on Saturday night.
The state police have already arrested a 25-year-old Nigerian Obi Okaroafor on Monday and remanded him to 14-day police custody while medical examination report of the complainant is awaited.
Police said that the lady had befriended accused on Saturday night during a party in a five star resort at Canacona and later spent night with him in his accommodation on the beachside.
The complaint, initially lodged with Canacona police station, states that Obi raped her same night by spiking her drinks.
Superintendent of police Allan D'Sa said that the victim claimed that she never consented for sex that night.
After initial investigations, the case was handed over to Crime Branch for further probe.