The teenager has "serious wounds" to his chest and leg after a brawl involving a group of youths.
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Envelope update
Severe disruption: M53 Merseyside both ways
BBC News TravelM53 Merseyside both ways severe disruption, from A59 to J1 for A5139 Wallasey Dock Link South.
M53 Merseyside - M53 closed from A59 to J1, A5139 (Wallasey), because of emergency repairs.
To report traffic and travel incidents dial 0330 123 0184 at any time
Envelope update
Severe disruption: A59 Merseyside westbound
BBC News TravelA59 Merseyside westbound severe disruption, from A5027 Gorsey Lane to M53.
A59 Merseyside - A59 closed westbound from the A5027 Gorsey Lane junction to the M53 junction, because of emergency repairs.
To report traffic and travel incidents dial 0330 123 0184 at any time
By Alex Homer & Ollie Sirrell
BBC Shared Data Unit & the Local Democracy Reporting Service
Envelope update
Severe disruption: A59 Merseyside westbound
BBC News TravelA59 Merseyside westbound severe disruption, between A5027 Gorsey Lane and M53.
A59 Merseyside - A59 in Wallasey blocked and queues westbound between the A5027 Gorsey Lane junction and the M53 junction, because of an obstruction. Congestion to the Kingsway Tunnel.
To report traffic and travel incidents dial 0330 123 0184 at any time