A BRAVE sister who punched a crocodile three times to help save her twin sister has sustained wounds that are 'concerning' to Mexican doctors.

Twins Melissa and Georgia Laurie, from Sandhurst, Bracknell Forest, were swimming in a lagoon in Mexico, around 10 miles from Puerto Escondido when the attack took place.

The girls were taking a break from their ambitions to scuba dive and work with animals when they took a trip with a guide recommended by their hostel.

During the excursion, a crocodile attacked the group and viciously bit and shook Melissa.

READ MORE:Sister describes terrifying moment her sibling fought off crocodile

Bracknell News:

George then swam to her rescue, punching the crocodile to free her sister from the reptile's grip.

The twin's elder sister Hana Laurie has updated members of the community on both of her sibling's conditions.

She explained how doctors are concerned for Georgia after she sustained wounds in the attack.

Hana also wrote on a fundraising page she set up for them that Melissa's condition is "delicate" with both sisters at risk.

She said: "The details of this awful ordeal are still not fully known to us, as the time difference, language barrier and the fact they're both admitted to hospital are making it very difficult to communicate.

"What is clear, is that Mel's condition is "delicate" having suffered an open wrist fracture, organ lacerations/internal bleeding and water on her lungs.

"Doctors are very concerned that she'll contract an infection (as they are too about Georgia's wounds) and have put them both on intravenous antibiotics."

Melissa has been placed into a medically induced coma while doctors attempt to drain fluid and enable her to breathe on her own.