(CNN) -- At least 18 people were killed in a series of coordinated attacks targeting sites popular with tourists and business people, according to police and CNN's sister network in India.

Ongoing battles between police and gunmen were reported at two five-star hotels by CNN-IBN.

Gunmen armed with automatic weapons and grenades attacked targets including the hotels, a cafe, and a train station, police say.

Police confirmed two deaths but IBN said at least 18 people were killed in the coordinated strikes, according to IBN.

The attacks included five shootouts and two grenade attacks, said a police officer who answered Mumbai's police control room line.

IBN reported an ongoing gun battle at the five-star Oberoi Hotel where gunmen have reportedly taken hostages.

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